Dr. William Cihak , MD
Internal Medicine โข Olean, NY
535 Main St
Olean, NY 147601513
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. William Cihak is listed in NPPES under Internal Medicine.
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NPI assigned on July 18, 2005; this date does not establish years in practice.
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Published CMS data list 4,426 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- Q9967 โ Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml: 1,900 service units.
- 36415 โ Insertion of needle into vein for collection of blood sample: 660 service units.
- G0439 โ Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 267 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 35 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 19,109 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Levothyroxine Sodium โ 1,037 prescription fills, including refills.
- Atorvastatin Calcium โ 1,005 prescription fills, including refills.
- Amlodipine Besylate โ 799 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 199 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Internal Medicine in New York (2024, 6,489 clinicians with data). Median for this group: 545. Middle half: 208 to 1,261.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 7,608 in 2020 to 4,426 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
535 Main St
Olean, NY 147601513
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Olean Medical Practice Pllc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
1998
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
957 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $149,608 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $121,256 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
39,381 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$1,283,273 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $454.29 across 25 records.
By nature of payment
- Food and Beverage: $454.29 across 25 records.
Reporting-company totals (3 largest of 13)
- Novo Nordisk Inc: $97.67 across 5 records.
- Boehringer Ingelheim Pharmaceuticals, Inc.: $80.86 across 4 records.
- Eli Lilly and Company: $56.50 across 3 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
28 years (graduated 1998)
CMS Doctors and Clinicians data list 1998 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Cihak has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Cihak as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Olean and New York
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Internal Medicine in New York (2024, 6,489 clinicians with data). Median for this group: 545. Middle half: 208 to 1,261.
Too few clinicians listed under Internal Medicine in Olean have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 80% of clinicians listed under Internal Medicine in New York (2024, 6,489 clinicians with data). Median for this group: $53,110. Middle half: $19,561 to $112,419.
Too few clinicians listed under Internal Medicine in Olean have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 80% of clinicians listed under Internal Medicine in New York (2024, 6,489 clinicians with data). Median for this group: $41,142. Middle half: $14,711 to $88,409.
Too few clinicians listed under Internal Medicine in Olean have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under Internal Medicine in New York (2024, 7,077 clinicians with data). Median for this group: 1,413. Middle half: 160 to 4,792.
Too few clinicians listed under Internal Medicine in Olean have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Internal Medicine in New York (2024, 7,077 clinicians with data). Median for this group: $125,591. Middle half: $9,716 to $480,352.
Too few clinicians listed under Internal Medicine in Olean have Medicare Part D data for 2024 to compare.
13 active clinicians are listed under Internal Medicine with a practice address in Olean, NY (12,093 in New York).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Olean
7.7% of these 13 clinicians have the CMS telehealth indicator.
61.5% of these 13 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 42% from 7,608 in 2020 to 4,426 in 2024.
- 2020: 7,608
- 2021: 8,289
- 2022: 9,052
- 2023: 6,627
- 2024: 4,426
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Medicare-allowed amount
Medicare-allowed amount decreased 22% from $192,158 in 2020 to $149,608 in 2024.
- 2020: $192,158
- 2021: $194,477
- 2022: $203,260
- 2023: $178,082
- 2024: $149,608
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Paid by Medicare
Paid by Medicare decreased 23% from $157,620 in 2020 to $121,256 in 2024.
- 2020: $157,620
- 2021: $160,798
- 2022: $168,367
- 2023: $148,080
- 2024: $121,256
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 11% from 17,228 in 2020 to 19,109 in 2024.
- 2020: 17,228
- 2021: 16,327
- 2022: 17,635
- 2023: 19,072
- 2024: 19,109
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30-day fills
30-day fills increased 14% from 34,545 in 2020 to 39,381 in 2024.
- 2020: 34,545
- 2021: 34,083
- 2022: 36,109
- 2023: 38,644
- 2024: 39,381
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Part D drug cost
Part D drug cost increased 29% from $996,650 in 2020 to $1,283,273 in 2024.
- 2020: $996,650
- 2021: $988,804
- 2022: $1,062,908
- 2023: $1,210,062
- 2024: $1,283,273
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $714.48 in 2021 to $454.29 in 2025.
- 2021: $714.48
- 2022: $667.89
- 2023: $429.52
- 2024: $515.16
- 2025: $454.29
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): 25 records totaling $454.29.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Sumitomo Pharma America, Inc. |
Food and Beverage
In-kind items and services
|
GEMTESA | General | $25.49 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $24.19 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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ZEPBOUND | General | $24.09 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Rybelsus | General | $22.63 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $21.23 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Ozempic | General | $20.79 |
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
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Dexcom G6 Transmitter | General | $20.75 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $20.15 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $19.64 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Ozempic | General | $19.50 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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ELIQUIS | General | $19.44 |
| ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) |
Food and Beverage
In-kind items and services
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CAPLYTA | General | $19.06 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $17.54 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $17.21 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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MOUNJARO | General | $16.71 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $16.43 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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GARDASIL 9 | General | $15.94 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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MOUNJARO | General | $15.70 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $15.29 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
|
Cologuard Collection Kit | General | $14.03 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
PREVNAR 20 | General | $13.86 |
| Viatris Specialty LLC |
Food and Beverage
In-kind items and services
|
YUPELRI | General | $13.77 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
TRELEGY ELLIPTA | General | $13.77 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
PREVNAR 20 | General | $13.61 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
TRELEGY ELLIPTA | General | $13.47 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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Q9967
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml
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1,900 | 19 | $1.16 | $0.13 |
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36415
Insertion of needle into vein for collection of blood sample
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660 | 390 | $17.00 | $8.65 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
|
267 | 267 | $350.00 | $122.99 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
266 | 219 | $225.00 | $121.52 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
193 | 135 | $160.00 | $86.32 |
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71046
X-ray of chest, 2 views
|
154 | 145 | $50.42 | $21.73 |
|
77067
Screening mammography
|
142 | 142 | $180.85 | $85.63 |
|
77063
Screening 3d breast mammography
|
141 | 141 | $40.43 | $22.40 |
|
G0008
Administration of influenza virus vaccine
|
73 | 72 | $28.07 | $26.82 |
|
73630
X-ray of foot, minimum of 3 views
|
69 | 59 | $60.00 | $26.25 |
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90662
Influenza vaccine split virus, preservative free
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67 | 66 | $124.25 | $81.67 |
|
96372
Injection of drug or substance under skin or into muscle
|
65 | 13 | $50.00 | $13.46 |
|
71250
Ct scan of chest without contrast
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41 | 39 | $364.65 | $78.76 |
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71271
Low dose ct scan of chest for lung cancer screening
|
40 | 40 | $300.00 | $83.41 |
|
93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
|
29 | 29 | $60.75 | $13.35 |
|
73610
X-ray of ankle, minimum of 3 views
|
23 | 22 | $60.00 | $28.60 |
|
76536
Ultrasound scan of head and neck soft tissue
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23 | 23 | $165.00 | $78.33 |
|
93880
Ultrasound of both sides of head and neck blood flow
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23 | 23 | $259.30 | $141.89 |
|
70450
Ct scan head or brain without contrast
|
20 | 20 | $376.81 | $64.39 |
|
76641
Complete ultrasound scan of 1 breast
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19 | 19 | $368.42 | $85.21 |
|
99495
Transitional care management services for problem of at least moderate complexity
|
19 | 19 | $360.00 | $195.92 |
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G0438
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
|
17 | 17 | $400.00 | $156.54 |
|
73502
X-ray of hip, 2-3 views
|
16 | 16 | $75.00 | $34.43 |
|
73030
X-ray of shoulder, minimum of 2 views
|
15 | 15 | $60.00 | $25.87 |
|
74018
X-ray of abdomen, 1 view
|
15 | 15 | $45.00 | $20.26 |
(top 25 shown)
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Levothyroxine Sodium | Levothyroxine Sodium | 1,037 | 72,999 | $14,580.39 | 229 |
| Atorvastatin Calcium | Atorvastatin Calcium | 1,005 | 79,445 | $12,799.32 | 255 |
| Amlodipine Besylate | Amlodipine Besylate | 799 | 59,324 | $6,030.98 | 194 |
| Lisinopril | Lisinopril | 777 | 62,332 | $8,553.26 | 199 |
| Metoprolol Succinate | Metoprolol Succinate | 568 | 37,935 | $9,286.49 | 132 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 528 | 37,466 | $7,024.82 | 133 |
| Metformin Hcl | Metformin Hcl | 480 | 34,982 | $5,304.07 | 114 |
| Hydrochlorothiazide | Hydrochlorothiazide | 477 | 35,815 | $2,338.38 | 123 |
| Pantoprazole Sodium | Pantoprazole Sodium | 468 | 32,378 | $5,831.52 | 115 |
| Omeprazole | Omeprazole | 467 | 34,741 | $6,804.29 | 113 |
| Losartan Potassium | Losartan Potassium | 419 | 29,106 | $4,767.81 | 101 |
| Meloxicam | Meloxicam | 405 | 21,614 | $1,905.76 | 94 |
| Gabapentin | Gabapentin | 312 | 12,927 | $5,398.29 | 71 |
| Montelukast Sodium | Montelukast Sodium | 300 | 18,546 | $4,160.08 | 62 |
| Levofloxacin | Levofloxacin | 296 | 2,787 | $1,100.33 | 199 |
| Pravastatin Sodium | Pravastatin Sodium | 282 | 20,255 | $4,291.16 | 61 |
| Glimepiride | Glimepiride | 277 | 21,654 | $3,874.39 | 67 |
| Furosemide | Furosemide | 276 | 17,724 | $1,379.12 | 75 |
| Alprazolam | Alprazolam | 259 | 6,554 | $1,415.88 | 74 |
| Escitalopram Oxalate | Escitalopram Oxalate | 258 | 17,516 | $3,065.75 | 61 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 254 | 6,049 | $5,352.98 | 40 |
| Tramadol Hcl | Tramadol Hcl | 245 | 4,263 | $1,473.17 | 84 |
| Simvastatin | Simvastatin | 244 | 21,028 | $2,692.82 | 62 |
| Eliquis | Apixaban | 242 | 10,081 | $192,714.07 | 38 |
| Famotidine | Famotidine | 239 | 15,285 | $3,026.17 | 56 |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20100219000622
NY
6608823364
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Olean Medical Practice Pllc
6133 Route 219 S, Ellicottville, NY 147319613
Phone: 7166994332
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Sleep Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Endocrinology, Diabetes & Metabolism
Doctor of Medicine (M.D.)
Nurse Practitioner
Nurse Practitioner
Nurse Practitioner - Adult Health
Nurse Practitioner
Internal Medicine - Pulmonary Disease
Doctor of Medicine (M.D.)
Psychiatry & Neurology - Neurology
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated July 18, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Olean
- Dr. Munir Salimi, MD
- Dr. Jin Hwa Song, MD
- Dr. Zia Sheikh, MD
- Dr. Joseph Sturdevant, MD
- Om Parkash
- Dr. Tomasz Woloszyn, MD
Mailing Address
535 Main St
Olean, NY 147601513
Phone: 7163720141