Dr. Gerald Franz Karnow , MD
General Practice • Spring Valley, NY
241 Hungry Hollow Rd
Spring Valley, NY 109776111
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. Gerald Karnow is listed in NPPES under General Practice.
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NPI assigned on August 17, 2006; this date does not establish years in practice.
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Published CMS data list 254 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Published rows only; this is not a quality measure.
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Published Part B service records, 2021:
- 99213 — Established patient outpatient office visit: 128 service units.
- 99214 — Established patient outpatient office visit: 47 service units.
- 99442 — Telephone medical discussion with physician: 30 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). CPT notice
See all 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 128 Medicare Part D prescriptions, including refills, in 2021.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Published rows only; this is not a quality measure.
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Published Part D records, 2021:
- Amlodipine Besylate — 26 prescription fills, including refills.
- Levothyroxine Sodium — 23 prescription fills, including refills.
- Lisinopril — 15 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 8 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 423 in 2017 to 254 in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2021.
Practice Location & Contact Primary Location
241 Hungry Hollow Rd
Spring Valley, NY 109776111
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $25,084 in 2021
The total amount Medicare approved for these services in 2021. 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, 2021.
Paid by Medicare
About $15,871 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, 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, 2021.
30-day fills
236 standardized 30-day fills in 2021
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
$1,906 in 2021
The total cost of these prescriptions in 2021, 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, 2021.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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. Karnow 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. Karnow 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 Spring Valley and New York
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Karnow are from 2021.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Karnow are from 2021.
2 active clinicians are listed under General Practice with a practice address in Spring Valley, NY (682 in New York).
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 decreased 40% from 423 in 2017 to 254 in 2021.
- 2017: 423
- 2018: 538
- 2019: 556
- 2020: 449
- 2021: 254
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Medicare-allowed amount
Medicare-allowed amount decreased 18% from $30,733 in 2017 to $25,084 in 2021.
- 2017: $30,733
- 2018: $40,094
- 2019: $47,796
- 2020: $39,847
- 2021: $25,084
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Paid by Medicare
Paid by Medicare decreased 20% from $19,842 in 2017 to $15,871 in 2021.
- 2017: $19,842
- 2018: $27,161
- 2019: $32,914
- 2020: $26,198
- 2021: $15,871
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 83% from 755 in 2017 to 128 in 2021.
- 2017: 755
- 2018: 705
- 2019: 606
- 2020: 311
- 2021: 128
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30-day fills
30-day fills decreased 75% from 939 in 2017 to 236 in 2021.
- 2017: 939
- 2018: 947
- 2019: 776
- 2020: 480
- 2021: 236
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Part D drug cost
Part D drug cost decreased 93% from $25,640 in 2017 to $1,906 in 2021.
- 2017: $25,640
- 2018: $29,313
- 2019: $12,118
- 2020: $7,725
- 2021: $1,906
Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2020 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, 2017–2021; 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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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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128 | 68 | $89.72 | $89.72 |
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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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47 | 39 | $129.67 | $129.67 |
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99442
Telephone medical discussion with physician, 11-20 minutes
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30 | 22 | $90.16 | $90.16 |
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99443
Telephone medical discussion with physician, 21-30 minutes
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30 | 15 | $124.56 | $124.56 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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19 | 14 | $57.41 | $55.98 |
Source: CMS Part B by Provider and Service, 2021; 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 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Amlodipine Besylate | Amlodipine Besylate | 26 | 1,410 | $214.25 | — |
| Levothyroxine Sodium | Levothyroxine Sodium | 23 | 1,417 | $407.73 | — |
| Lisinopril | Lisinopril | 15 | 690 | $108.09 | — |
| Metformin Hcl | Metformin Hcl | 15 | 861 | $111.38 | — |
| Atorvastatin Calcium | Atorvastatin Calcium | 14 | 1,170 | $176.03 | — |
| Furosemide | Furosemide | 13 | 390 | $68.72 | — |
| Diazepam | Diazepam | 11 | 330 | $28.37 | — |
| Armour Thyroid | Thyroid,pork | 11 | 759 | $791.36 | — |
Source: CMS Part D by Provider and Drug, 2021; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL PRACTICE
I20081106000508
NY
5294894168
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Emergency Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated August 17, 2006.
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
Mailing Address
241 Hungry Hollow Rd
Spring Valley, NY 109776111
Phone: 8454257441