Jeanie Ahn, M.D.
NPI 1053359356 · Nephrology Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeanie Ahn, M.D. is a Nephrology Physician provider in Fremont, CA (NPI 1053359356).
Provider details
- NPI number
- 1053359356
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A065315 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
2,568 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) |
|---|---|---|
| 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 | 482 | $19 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 354 | $87 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 326 | $131 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 284 | $401 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 239 | $213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 281 | 78 |
| Valsartan | 133 | 51 |
| Amlodipine Besylate | 127 | 48 |
| Dapagliflozin Propanediolbrand: Farxiga | 85 | 22 |
| Calcifediolbrand: Rayaldee | 79 | 14 |
| Carvedilol | 68 | 18 |
| Losartan Potassium | 62 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,005 across 77 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
- 2006-06-02
- Last updated
- 2022-11-27
- Certified
- 2022-11-27
Frequently asked questions
- What is Jeanie Ahn's NPI number?
- Jeanie Ahn's National Provider Identifier (NPI) is 1053359356, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeanie Ahn's specialty?
- Jeanie Ahn is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Jeanie Ahn located?
- Jeanie Ahn's practice location on file with NPPES is 1999 Mowry Ave, Fremont, CA 94538-1738.
- What is Jeanie Ahn's phone number?
- The practice phone number listed in the NPPES registry for Jeanie Ahn is (510) 745-8186.
- Does Jeanie Ahn accept Medicare?
- Jeanie Ahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeanie Ahn's NPI active?
- Yes — Jeanie Ahn's NPI (1053359356) is active in the NPPES registry as of the last update on 2022-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.