Nancy Holbrook, MD
NPI 1770063000 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Holbrook, MD is a Internal Medicine Physician provider in New York, NY (NPI 1770063000).
Provider details
- NPI number
- 1770063000
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 329353 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
475 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 | 279 | $129 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 65 | $86 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 59 | $189 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 51 | $125 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 21 | $143 |
Typical Medicare-allowed amounts for these services range $86–$189 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 30 | 18 |
| Amlodipine Besylate | 22 | — |
| Losartan Potassium | 19 | 14 |
| Hydrochlorothiazide | 15 | — |
| Rosuvastatin Calcium | 15 | — |
| Lisinopril | 14 | — |
| Alendronate Sodium | 13 |
Practice location
Mailing address
Additional practice locations (1)
- 505 E 70th StNew York, NY 10021-4872Phone: (212) 746-2900
Registry dates
- Enumerated
- 2018-08-16
- Last updated
- 2024-05-16
- Certified
- 2024-05-16
Frequently asked questions
- What is Nancy Holbrook's NPI number?
- Nancy Holbrook's National Provider Identifier (NPI) is 1770063000, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Holbrook's specialty?
- Nancy Holbrook is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Holbrook located?
- Nancy Holbrook's practice location on file with NPPES is 100 E 77th St, New York, NY 10075-1850.
- What is Nancy Holbrook's phone number?
- The practice phone number listed in the NPPES registry for Nancy Holbrook is (212) 434-2000.
- Does Nancy Holbrook accept Medicare?
- Nancy Holbrook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Holbrook's NPI active?
- Yes — Nancy Holbrook's NPI (1770063000) is active in the NPPES registry as of the last update on 2024-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.