Dr. Sylvia Tan , MD
Internal Medicine • Guymon, OK
350 Ne 12th St
Guymon, OK 739423624
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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NPI assigned on July 25, 2006; this date does not establish years in practice.
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Published CMS data list 4,377 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- J1100 — Injection, dexamethasone sodium phosphate, 1 mg: 1,132 service units.
- 99214 — Established patient outpatient office visit: 1,105 service units.
- 96372 — Injection of drug or substance under skin or into muscle: 311 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® 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 25 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 3,946 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Atorvastatin Calcium — 239 prescription fills, including refills.
- Levothyroxine Sodium — 208 prescription fills, including refills.
- Tramadol Hcl — 164 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 86 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Oklahoma (2024, 606 clinicians with data). Median for this group: 783. Middle half: 367 to 1,551.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 4,459 in 2020 to 4,377 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
350 Ne 12th St
Guymon, OK 739423624
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: Specialty Clinics Of St Anne 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
1989
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
323 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 – by Provider, 2024.
Medicare-allowed amount
About $190,215 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 – by Provider and Service, 2024.
Paid by Medicare
About $149,945 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 – by Provider and Service, 2024.
30-day fills
6,320 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
$235,928 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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $430.40 across 17 records.
By nature of payment
- Food and Beverage: $330.45 across 16 records.
- Education: $99.95 across 1 record.
Reporting-company totals (3 largest of 7)
- AstraZeneca Pharmaceuticals LP: $238.54 across 11 records.
- Sanofi and Genzyme US Companies: $99.95 across 1 record.
- ABBVIE INC.: $23.24 across 1 record.
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
37 years (graduated 1989)
CMS Doctors and Clinicians data list 1989 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
2006
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, “Does your provider accept Medicare as full payment?”
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. Tan 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. Tan 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 Guymon and Oklahoma
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Oklahoma (2024, 606 clinicians with data). Median for this group: 783. Middle half: 367 to 1,551.
Too few clinicians listed under Internal Medicine in Guymon have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 85% of clinicians listed under Internal Medicine in Oklahoma (2024, 606 clinicians with data). Median for this group: $72,432. Middle half: $34,420 to $122,216.
Too few clinicians listed under Internal Medicine in Guymon have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 85% of clinicians listed under Internal Medicine in Oklahoma (2024, 606 clinicians with data). Median for this group: $54,372. Middle half: $25,264 to $94,295.
Too few clinicians listed under Internal Medicine in Guymon have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 65% of clinicians listed under Internal Medicine in Oklahoma (2024, 658 clinicians with data). Median for this group: 590. Middle half: 88 to 5,705.
Too few clinicians listed under Internal Medicine in Guymon have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine in Oklahoma (2024, 658 clinicians with data). Median for this group: $71,971. Middle half: $1,880 to $562,379.
Too few clinicians listed under Internal Medicine in Guymon have Medicare Part D data for 2024 to compare.
3 active clinicians are listed under Internal Medicine with a practice address in Guymon, OK (1,118 in Oklahoma).
Addresses are self-reported to NPPES and may be out of date.
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 stayed about the same: 4,459 in 2020 and 4,377 in 2024.
- 2020: 4,459
- 2021: 5,123
- 2022: 5,645
- 2023: 4,473
- 2024: 4,377
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Medicare-allowed amount
Medicare-allowed amount increased 18% from $161,438 in 2020 to $190,215 in 2024.
- 2020: $161,438
- 2021: $219,743
- 2022: $211,607
- 2023: $175,472
- 2024: $190,215
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Paid by Medicare
Paid by Medicare increased 20% from $124,455 in 2020 to $149,945 in 2024.
- 2020: $124,455
- 2021: $171,675
- 2022: $162,026
- 2023: $134,085
- 2024: $149,945
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 11% from 4,431 in 2020 to 3,946 in 2024.
- 2020: 4,431
- 2021: 4,348
- 2022: 4,700
- 2023: 4,323
- 2024: 3,946
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30-day fills
30-day fills stayed about the same: 6,662 in 2020 and 6,320 in 2024.
- 2020: 6,662
- 2021: 6,686
- 2022: 7,032
- 2023: 6,437
- 2024: 6,320
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Part D drug cost
Part D drug cost increased 12% from $210,198 in 2020 to $235,928 in 2024.
- 2020: $210,198
- 2021: $166,886
- 2022: $179,864
- 2023: $240,309
- 2024: $235,928
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 63% from $1,163.90 in 2021 to $430.40 in 2025.
- 2021: $1,163.90
- 2022: $917.60
- 2023: $571.70
- 2024: $534.58
- 2025: $430.40
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 · 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 – December 31, 2025): 17 records totaling $430.40.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Sanofi and Genzyme US Companies |
Education
In-kind items and services
|
DUPIXENT | General | $99.95 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
BREZTRI | General | $55.31 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $23.24 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $22.00 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $21.03 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $20.47 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $20.42 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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The Cologuard Plus Collection Kit | General | $19.50 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $18.89 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $18.41 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $17.52 |
| Viatris Specialty LLC |
Food and Beverage
In-kind items and services
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YUPELRI | General | $17.41 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $17.12 |
| Bayer Healthcare Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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Kerendia | General | $15.95 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
NURTEC ODT | General | $15.81 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FASENRA | General | $13.91 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FASENRA | General | $13.46 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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 – by Provider and Service data, 2017–2024; 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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J1100
Injection, dexamethasone sodium phosphate, 1 mg
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1,132 | 124 | $2.00 | $0.11 |
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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
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1,105 | 315 | $150.00 | $118.10 |
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96372
Injection of drug or substance under skin or into muscle
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311 | 130 | $42.00 | $13.11 |
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80053
Blood test, comprehensive group of blood chemicals
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295 | 203 | $65.00 | $10.31 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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291 | 202 | $24.00 | $7.58 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
|
203 | 203 | $150.00 | $119.81 |
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80061
Blood test, lipids (cholesterol and triglycerides)
|
194 | 176 | $52.00 | $12.92 |
|
83036
Hemoglobin a1c level
|
129 | 97 | $50.00 | $9.52 |
|
84443
Blood test, thyroid stimulating hormone (tsh)
|
129 | 122 | $60.00 | $16.46 |
|
81003
Automated urinalysis test
|
77 | 58 | $10.00 | $2.20 |
|
87635
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen
|
66 | 55 | $90.00 | $50.28 |
|
36415
Insertion of needle into vein for collection of blood sample
|
61 | 56 | $10.00 | $8.65 |
|
71046
X-ray of chest, 2 views
|
57 | 39 | $85.00 | $30.16 |
|
G0442
Annual alcohol misuse screening, 5 to 15 minutes
|
57 | 57 | $20.00 | $17.18 |
|
G0444
Annual depression screening, 5 to 15 minutes
|
55 | 55 | $20.00 | $17.18 |
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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
|
51 | 44 | $100.00 | $82.52 |
|
93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
|
29 | 26 | $59.00 | $13.08 |
|
G0181
Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow
|
23 | 12 | $93.00 | $91.51 |
|
G0008
Administration of influenza virus vaccine
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21 | 19 | $40.00 | $30.07 |
|
90658
Influenza vaccine, trivalent, 0.5 ml dosage
|
20 | 19 | $26.00 | $21.42 |
|
99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
|
16 | 13 | $70.00 | $51.80 |
|
G0402
Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment
|
15 | 15 | $200.00 | $153.23 |
|
99211
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
|
14 | 11 | $50.00 | $20.92 |
|
80048
Blood test, basic group of blood chemicals (calcium, total)
|
13 | 12 | $52.00 | $8.29 |
|
87502
Detection test by nucleic acid for multiple types influenza virus
|
13 | 12 | $90.00 | $88.20 |
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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 239 | 16,220 | $2,938.17 | 68 |
| Levothyroxine Sodium | Levothyroxine Sodium | 208 | 13,037 | $1,439.69 | 55 |
| Tramadol Hcl | Tramadol Hcl | 164 | 4,432 | $1,052.14 | 42 |
| Metformin Hcl | Metformin Hcl | 153 | 8,053 | $607.41 | 36 |
| Gabapentin | Gabapentin | 143 | 5,081 | $1,236.49 | 28 |
| Pantoprazole Sodium | Pantoprazole Sodium | 139 | 5,500 | $1,228.94 | 36 |
| Amlodipine Besylate | Amlodipine Besylate | 125 | 8,130 | $435.60 | 36 |
| Losartan Potassium | Losartan Potassium | 124 | 8,010 | $1,094.24 | 37 |
| Montelukast Sodium | Montelukast Sodium | 103 | 5,300 | $983.93 | 28 |
| Alprazolam | Alprazolam | 98 | 2,940 | $319.99 | 18 |
| Metoprolol Succinate | Metoprolol Succinate | 93 | 6,690 | $1,267.82 | 27 |
| Lisinopril | Lisinopril | 90 | 5,300 | $436.38 | 28 |
| Meloxicam | Meloxicam | 86 | 2,752 | $342.11 | 28 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 74 | 4,980 | $842.45 | 24 |
| Clonazepam | Clonazepam | 73 | 2,185 | $587.36 | — |
| Sertraline Hcl | Sertraline Hcl | 71 | 3,330 | $568.08 | 14 |
| Azithromycin | Azithromycin | 68 | 342 | $224.63 | 50 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 63 | 1,612 | $1,320.05 | 20 |
| Carvedilol | Carvedilol | 58 | 3,380 | $421.71 | 15 |
| Hydrochlorothiazide | Hydrochlorothiazide | 58 | 4,170 | $240.97 | 15 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 57 | 409 | $309.31 | 42 |
| Omeprazole | Omeprazole | 56 | 2,340 | $624.93 | 13 |
| Cefuroxime | Cefuroxime Axetil | 56 | 417 | $726.24 | 41 |
| Allopurinol | Allopurinol | 54 | 2,700 | $495.83 | 12 |
| Fluoxetine Hcl | Fluoxetine Hcl | 53 | 2,430 | $257.29 | 13 |
(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
Self-certified to NPPES: 2024-08-20NUCC 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
I20041208000442
OK
0143286401
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
Specialty Clinics Of St Anne Pllc
350 Ne 12th St, Guymon, OK 739423624
Phone: 5803388700
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
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
NPI status registered as active in NPPES database
Registered at 350 NE 12TH ST, GUYMON, OK 739423624 (Tel: 5803388700)
Registered at 350 NE 12TH ST, GUYMON, OK 739423624 (Tel: 5803388700)
Recorded as SYLVIA TAN, M.D.
Internal Medicine (license number reported to NPPES: OK 19772)
NPI status registered as active in NPPES database
Registered at 350 NE 12TH ST, GUYMON, OK 739423624 (Tel: 5803388700)
Registered at 350 NE 12TH ST, GUYMON, OK 739423624 (Tel: 5803388700)
Recorded as SYLVIA TAN, M.D.
Internal Medicine (license number reported to NPPES: OK 19772)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Guymon
Mailing Address
350 Ne 12th St
Guymon, OK 739423624
Phone: 5803388700