Louisa Holaday
NPI 1407238256 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louisa Holaday is a Internal Medicine Physician provider in New York, NY (NPI 1407238256).
Provider details
- NPI number
- 1407238256
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
- License
- 294930 (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
10 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
43 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 17 | $106 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 13 | $72 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 13 | $158 |
Typical Medicare-allowed amounts for these services range $72–$158 (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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 51 | 16 |
| Amlodipine Besylate | 22 | — |
| Gabapentin | 20 | — |
| Simvastatin | 19 | — |
| Lisinopril | 17 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 16 | — |
| Rosuvastatin Calcium |
Practice location
Mailing address
Additional practice locations (1)
- 111 E 210th StBronx, NY 10467-2401Phone: (718) 920-4321
Registry dates
- Enumerated
- 2015-06-28
- Last updated
- 2021-06-07
- Certified
- 2021-06-07
Frequently asked questions
- What is Louisa Holaday's NPI number?
- Louisa Holaday's National Provider Identifier (NPI) is 1407238256, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louisa Holaday's specialty?
- Louisa Holaday is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Louisa Holaday located?
- Louisa Holaday's practice location on file with NPPES is 1 Gustave L Levy Pl, New York, NY 10029-6504.
- What is Louisa Holaday's phone number?
- The practice phone number listed in the NPPES registry for Louisa Holaday is (212) 241-4141.
- Does Louisa Holaday accept Medicare?
- Louisa Holaday is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louisa Holaday's NPI active?
- Yes — Louisa Holaday's NPI (1407238256) is active in the NPPES registry as of the last update on 2021-06-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.