Nathaniel Kratz, M.D.
NPI 1639532476 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Kratz, M.D. is a Internal Medicine Physician provider in New York, NY (NPI 1639532476).
Provider details
- NPI number
- 1639532476
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 299476 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
42 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 42 | $138 |
Typical Medicare-allowed amounts for these services range $138–$138 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 58 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Diclofenac Sodium | 190 | 54 |
| Amlodipine Besylate | 141 | 47 |
| Atorvastatin Calcium | 123 | 46 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 100 | 28 |
| Fluticasone Propionate | 94 | 24 |
| Omeprazole | 87 | 32 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-03-30
- Last updated
- 2026-03-31
- Certified
- 2026-03-31
Frequently asked questions
- What is Nathaniel Kratz's NPI number?
- Nathaniel Kratz's National Provider Identifier (NPI) is 1639532476, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Kratz's specialty?
- Nathaniel Kratz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathaniel Kratz located?
- Nathaniel Kratz's practice location on file with NPPES is 5141 Broadway, New York, NY 10034-1159.
- What is Nathaniel Kratz's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Kratz is (212) 932-4461.
- Does Nathaniel Kratz accept Medicare?
- Nathaniel Kratz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Kratz's NPI active?
- Yes — Nathaniel Kratz's NPI (1639532476) is active in the NPPES registry as of the last update on 2026-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.