Donald Matheson, M.D.
NPI 1629060900 · Family Medicine Physician · Willits, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Matheson, M.D. is a Family Medicine Physician provider in Willits, CA (NPI 1629060900).
Provider details
- NPI number
- 1629060900
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- G25745 (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
145 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) |
|---|---|---|
| Hemoglobin A1c Level83036 | 85 | $10 |
| Heart Rhythm Review and Interpretation of Continous External Ekg Over 8-15 Days93248 | 46 | $25 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus87426 | 14 | $34 |
Typical Medicare-allowed amounts for these services range $10–$34 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is Donald Matheson's NPI number?
- Donald Matheson's National Provider Identifier (NPI) is 1629060900, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Matheson's specialty?
- Donald Matheson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Matheson located?
- Donald Matheson's practice location on file with NPPES is 1245 S Main St, Willits, CA 95490-4305.
- What is Donald Matheson's phone number?
- The practice phone number listed in the NPPES registry for Donald Matheson is (707) 459-6861.
- Does Donald Matheson accept Medicare?
- Donald Matheson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Matheson's NPI active?
- Yes — Donald Matheson's NPI (1629060900) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.