Katherine Allyn
NPI 1902435654 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Allyn is a Internal Medicine Physician provider in New York, NY (NPI 1902435654).
Provider details
- NPI number
- 1902435654
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 324184 (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
6 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
198 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 74 | $18 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 48 | $72 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 34 | $158 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 30 | $104 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 12 | $144 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 112 | 45 |
| Amlodipine Besylate | 78 | 29 |
| Gabapentin | 67 | 22 |
| Fluticasone Propionate | 63 | 20 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 57 | 13 |
| Levothyroxine Sodium | 49 | 16 |
| Losartan Potassium |
Practice location
Mailing address
Additional practice locations (1)
- 1 Gustave L Levy PlNew York, NY 10029-6504Phone: (212) 241-6741
Registry dates
- Enumerated
- 2020-04-05
- Last updated
- 2023-07-25
- Certified
- 2023-07-25
Frequently asked questions
- What is Katherine Allyn's NPI number?
- Katherine Allyn's National Provider Identifier (NPI) is 1902435654, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Allyn's specialty?
- Katherine Allyn is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Allyn located?
- Katherine Allyn's practice location on file with NPPES is 17 E 102nd St, New York, NY 10029-5204.
- What is Katherine Allyn's phone number?
- The practice phone number listed in the NPPES registry for Katherine Allyn is (212) 659-8551.
- Does Katherine Allyn accept Medicare?
- Katherine Allyn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Allyn's NPI active?
- Yes — Katherine Allyn's NPI (1902435654) is active in the NPPES registry as of the last update on 2023-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.