Peter Ahn, NURSE PRACTITIONER
NPI 1568909901 · Family Nurse Practitioner · Winnetka, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Ahn, NURSE PRACTITIONER is a Family Nurse Practitioner provider in Winnetka, CA (NPI 1568909901).
Provider details
- NPI number
- 1568909901
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NURSE PRACTITIONER
- Sex
- Male
- Sole proprietor
- No
- License
- NP95005656 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
42 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 42 | $9 |
Typical Medicare-allowed amounts for these services range $9–$9 (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 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 133 | 54 |
| Metformin Hcl | 104 | 39 |
| Losartan Potassium | 66 | 27 |
| Levothyroxine Sodium | 63 | 19 |
| Pravastatin Sodium | 62 | 23 |
| Lisinopril | 57 | 23 |
| Amlodipine Besylate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$757 across 65 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-01-24
- Last updated
- 2023-08-15
- Certified
- 2023-08-15
Frequently asked questions
- What is Peter Ahn's NPI number?
- Peter Ahn's National Provider Identifier (NPI) is 1568909901, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Ahn's specialty?
- Peter Ahn is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Peter Ahn located?
- Peter Ahn's practice location on file with NPPES is 20800 Sherman Way, Winnetka, CA 91306-2707.
- What is Peter Ahn's phone number?
- The practice phone number listed in the NPPES registry for Peter Ahn is (818) 883-2273.
- Does Peter Ahn accept Medicare?
- Peter Ahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Ahn's NPI active?
- Yes — Peter Ahn's NPI (1568909901) is active in the NPPES registry as of the last update on 2023-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.