Alexander Marson, M.D., PH.D.
NPI 1417276254 · Internal Medicine Physician · San Francisco, CA
Alexander Marson, M.D., PH.D. is a Internal Medicine Physician provider in San Francisco, CA (NPI 1417276254).
Provider details
- NPI number
- 1417276254
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A121580 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
16 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$13,414 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-19
- Last updated
- 2015-03-25
Frequently asked questions
- What is Alexander Marson's NPI number?
- Alexander Marson's National Provider Identifier (NPI) is 1417276254, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Marson's specialty?
- Alexander Marson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Marson located?
- Alexander Marson's practice location on file with NPPES is 400 Parnassus Ave, San Francisco, CA 94143-0001.
- What is Alexander Marson's phone number?
- The practice phone number listed in the NPPES registry for Alexander Marson is (415) 353-2326.
- Is Alexander Marson's NPI active?
- Yes — Alexander Marson's NPI (1417276254) is active in the NPPES registry as of the last update on 2015-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.