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Dr. Mark S. Marin, MD
NPI1144375668
- Medicare services, 2021
- 351
- Part D claims, 2024
- 20
- Publications
- 1
- Industry payments
- $122
- Affiliated sites
- 1
- Practice address
- 2100 Webster St Suite 423 Suite 423, San Francisco, CA 94115-2380
- Practice phone
- Call (415) 923-3878
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pacific Internal Medicine Associates
Primary care practice · San Francisco, California
Find Dr. Marin's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mark S. Marin is an internist in San Francisco, California
Dr. Marin practices at Pacific Internal Medicine Associates in San Francisco, California.
Dr. Marin's NPI, 1144375668, was assigned on January 24, 2007. Dr. Marin graduated from Universidad La Salle School of Medicine in 1987. Dr. Marin's California license number on file is A48430.
NPI and contact details
- NPI
- 1144375668NPI Registry (opens in a new tab)
- NPI enumeration date
- January 24, 2007
- NPI status
- Active
- Practice phone
- (415) 923-3878
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark S. Marin practices at 2 locations in San Francisco, California
Dr. Marin's primary practice is Pacific Internal Medicine Associates, at 2100 Webster St Suite 423 Suite 423, San Francisco, CA 94115-2380. The practice phone is (415) 923-3878. The NPI Registry lists Dr. Marin's practice address as 505 Parnassus Ave, San Francisco, CA 94131.
- Pacific Internal Medicine AssociatesPrimary2100 Webster St Suite 423 Suite 423, San Francisco, CA 94115-2380Phone(415) 923-3878
- NPI Registry address505 Parnassus Ave, San Francisco, CA 94131 · San Francisco CountyPhone(415) 397-4295
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Mark S. Marin is affiliated with 1 site of care and 1 medical group
Dr. Marin's primary practice is Pacific Internal Medicine Associates in San Francisco, California. The medical group on file is Pacific Internal Medicine Associates.
Pacific Internal Medicine AssociatesPrimary
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Mark S. Marin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marin practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pacific Internal Medicine Associates | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark S. Marin is one of 16,751 internists in California
Internal medicine is Dr. Marin's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Marin has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Marin
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark S. Marin billed Medicare for 351 services in 2021
CMS data shows 351 Medicare services from Dr. Marin across 9 procedure codes in 2021. Medicare paid $32,472 for them. Every service was in an office.
Medicare services, 2021351
Paid by Medicare$32,472
Procedure codes9
Dr. Marin's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 1582021: 1654%
- Other services
- 2020: 1252021: 1293%
- Tests and treatments
- 2020: 712021: 5720%
Dr. Marin compared with the California median for internists, 2021
- Dr. Marin
- California median
- Medicare services
- 351vs 361Close to median
- Part D claims
- 533vs 42127% above
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Marin's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marin and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark S. Marin's patients have a median age of 62
Across all payers, Dmand AI patient panel data puts Dr. Marin's median patient age at 62, with 25% women.
Dr. Marin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women25%
- Men70%
Source: Dmand AI Patient Panel Data
Dr. Mark S. Marin wrote 20 Medicare Part D claims in 2024
In 2024, Dr. Marin wrote 20 Medicare Part D claims. 80% of them were for generic drugs. They cover 18 drugs, with $7,006 in total drug cost. In 2021, CMS named 2,311 claims across 62 drugs.
Part D claims, 202420
Drugs named by CMS18
Total drug cost$7,006
Dr. Marin's Part D claims by kind of drug, 2024
- Generic16 claims80%
- Brand-name and other4 claims20%
Dr. Marin's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 2,3112022: 53377%
Drugs named by CMS: 18 in 2022, 62 in 2021.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Mark S. Marin has 1 publication on record
Dmand AI links 1 paper to Dr. Marin. Dr. Marin's most frequent co-author is Lory David Wiviott, MD.
Papers1
Dr. Marin's most frequent co-authors
Recent publications by Dr. Marin
See who Dr. Marin researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Marin works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark S. Marin received $122 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Marin from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $122.
Companies that paid Dr. Marin the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark S. Marin graduated from Universidad La Salle School of Medicine
Dr. Marin graduated from Universidad La Salle School of Medicine in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Mark S. Marin accepts plans from 5 insurance carriers
Dr. Marin is in network with 5 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- Elevance
- HCSC
Plan types Dr. Marin accepts, by number of carriers
- PPO3
- POS2
- EPO1
- HMO1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark S. Marin's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark S. Marin
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark S. Marin's NPI number?
Dr. Mark S. Marin's NPI number is 1144375668. It was assigned on January 24, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark S. Marin?
Dr. Mark S. Marin is an internist in San Francisco, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark S. Marin practice?
Dr. Marin practices at 2100 Webster St Suite 423 Suite 423, San Francisco, CA 94115-2380. Dr. Marin also practices at 505 Parnassus Ave, San Francisco, CA 94131. Dr. Marin's primary practice is Pacific Internal Medicine Associates in San Francisco, California.
What is Dr. Mark S. Marin's office phone number?
The practice phone on file for Dr. Marin is (415) 923-3878.
What is Dr. Mark S. Marin's medical license number?
Dr. Marin's California license number on file is A48430.
What medical group is Dr. Mark S. Marin part of?
Dr. Marin is linked to Pacific Internal Medicine Associates.
Does Dr. Mark S. Marin accept Medicare?
Yes. CMS data shows Dr. Marin billed Medicare for 351 services in 2021.
What services does Dr. Mark S. Marin bill to Medicare?
In 2021, Dr. Marin's most billed Medicare services were office visit, established patient (99213), medicare service (G0439) and office visit, established patient (99214).
Where did Dr. Mark S. Marin go to medical school?
Dr. Marin graduated from Universidad La Salle School of Medicine in 1987.
What drugs does Dr. Mark S. Marin prescribe most?
In 2022 Medicare Part D data, Dr. Marin's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Amlodipine Besylate.
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Has Dr. Mark S. Marin received payments from drug or device companies?
CMS Open Payments shows $122 in general payments to Dr. Marin from 1 company from 2018 to 2018. The largest total came from Gilead Sciences, Inc.
How long has Dr. Mark S. Marin been practicing?
Dr. Marin graduated from medical school in 1987, 39 years ago.
Does Dr. Mark S. Marin do research?
Dmand AI links 1 publication to Dr. Marin.
Who does Dr. Mark S. Marin publish with?
Dr. Marin's most frequent co-authors are Lory David Wiviott, MD (1 shared paper).
What insurance does Dr. Mark S. Marin accept?
Dr. Marin is in network with 5 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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