Alan Marx, MD
NPI 1902984529 · Psychiatry Physician · San Carlos, CA
Alan Marx, MD is a Psychiatry Physician provider in San Carlos, CA (NPI 1902984529).
Provider details
- NPI number
- 1902984529
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C35978 (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
98 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 | 55 | $153 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 43 | $81 |
Typical Medicare-allowed amounts for these services range $81–$153 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Bupropion Hclbrand: Bupropion Xl | 31 |
| Bupropion Hclbrand: Bupropion Hcl Sr | 30 |
| Trazodone Hcl | 30 |
| Escitalopram Oxalate | 29 |
| Duloxetine Hcl | 24 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 24 |
| Lamotrigine | 20 |
| Sertraline Hcl | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2020-05-29
- Certified
- 2020-05-29
Frequently asked questions
- What is Alan Marx's NPI number?
- Alan Marx's National Provider Identifier (NPI) is 1902984529, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Marx's specialty?
- Alan Marx is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Alan Marx located?
- Alan Marx's practice location on file with NPPES is 301 Industrial Rd, San Carlos, CA 94070-2603.
- What is Alan Marx's phone number?
- The practice phone number listed in the NPPES registry for Alan Marx is (650) 596-4195.
- Is Alan Marx's NPI active?
- Yes — Alan Marx's NPI (1902984529) is active in the NPPES registry as of the last update on 2020-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.