David Hahn, D.O.
NPI 1255385597 · Family Medicine Physician · Chico, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Hahn, D.O. is a Family Medicine Physician provider in Chico, CA (NPI 1255385597).
Provider details
- NPI number
- 1255385597
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A8638 (CA)
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,779 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 35 Minutes99232 | 652 | $72 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 472 | $108 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 438 | $105 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 149 | $158 |
| Critical Care, First 30-74 Minutes99291 | 68 | $191 |
Typical Medicare-allowed amounts for these services range $72–$191 (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 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 38 | 19 |
| Pantoprazole Sodium | 37 | 19 |
| Furosemide | 36 | 24 |
| Amlodipine Besylate | 35 | 15 |
| Carvedilol | 34 | 21 |
| Prednisone | 33 | 33 |
| Apixabanbrand: Eliquis | 31 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-20
- Last updated
- 2023-08-17
- Certified
- 2023-07-27
Frequently asked questions
- What is David Hahn's NPI number?
- David Hahn's National Provider Identifier (NPI) is 1255385597, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Hahn's specialty?
- David Hahn is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Hahn located?
- David Hahn's practice location on file with NPPES is 1531 Esplanade, Chico, CA 95926-3310.
- What is David Hahn's phone number?
- The practice phone number listed in the NPPES registry for David Hahn is (530) 332-5557.
- Does David Hahn accept Medicare?
- David Hahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Hahn's NPI active?
- Yes — David Hahn's NPI (1255385597) is active in the NPPES registry as of the last update on 2023-08-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.