Eric Weaver, MD
NPI 1538604608 · Psychiatry Physician · Corte Madera, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eric Weaver, MD is a Psychiatry Physician provider in Corte Madera, CA (NPI 1538604608).
Provider details
- NPI number
- 1538604608
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- W-160-234-288-308 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Student in an Organized Health Care Education/Training Program390200000XLicense W-160-234-288-308 (MD)
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
485 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 | 231 | $153 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 169 | $81 |
| Psychotherapy With Evaluation and Management Visit, 45 Minutes90836 | 67 | $102 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 18 | $219 |
Typical Medicare-allowed amounts for these services range $81–$219 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Bupropion Hclbrand: Bupropion Xl | 27 |
| Gabapentin | 27 |
| Olanzapine | 23 |
| Clonazepam | 18 |
| Fluoxetine Hcl | 16 |
| Mirtazapine | 16 |
| Lamotrigine | 13 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 600 N Wolfe StThe Johns Hopkins HospitalBaltimore, MD 21287-0005Phone: (410) 955-5000
Registry dates
- Enumerated
- 2016-12-28
- Last updated
- 2023-07-10
- Certified
- 2023-07-10
Frequently asked questions
- What is Eric Weaver's NPI number?
- Eric Weaver's National Provider Identifier (NPI) is 1538604608, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eric Weaver's specialty?
- Eric Weaver is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Eric Weaver located?
- Eric Weaver's practice location on file with NPPES is 300 Tamal Plz Ste 180, Corte Madera, CA 94925-1131.
- What is Eric Weaver's phone number?
- The practice phone number listed in the NPPES registry for Eric Weaver is (628) 261-7040.
- Does Eric Weaver accept Medicare?
- Eric Weaver is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eric Weaver's NPI active?
- Yes — Eric Weaver's NPI (1538604608) is active in the NPPES registry as of the last update on 2023-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.