Max Duncan, D.O.
NPI 1114066974 · Neurology Physician · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Max Duncan, D.O. is a Neurology Physician provider in Santa Rosa, CA (NPI 1114066974).
Provider details
- NPI number
- 1114066974
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 128269 (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
19 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
1,654 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 600 | $139 |
| 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 | 462 | $17 |
| Injection of Chemical for Paralysis of Facial and Neck Nerve Muscles on Both Sides of Face64615 | 190 | $161 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 156 | $180 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 146 | $196 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 73 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 525 | 141 |
| Memantine Hcl | 440 | 118 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 384 | 103 |
| Donepezil Hcl | 341 | 103 |
| Levetiracetam | 235 | 56 |
| Escitalopram Oxalate | 178 | 48 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa Er | 120 | 37 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-06
- Last updated
- 2019-11-18
Frequently asked questions
- What is Max Duncan's NPI number?
- Max Duncan's National Provider Identifier (NPI) is 1114066974, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Max Duncan's specialty?
- Max Duncan is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Max Duncan located?
- Max Duncan's practice location on file with NPPES is 3883 Airway Dr, Santa Rosa, CA 95403-1670.
- What is Max Duncan's phone number?
- The practice phone number listed in the NPPES registry for Max Duncan is (707) 521-7755.
- Does Max Duncan accept Medicare?
- Max Duncan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Max Duncan's NPI active?
- Yes — Max Duncan's NPI (1114066974) is active in the NPPES registry as of the last update on 2019-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.