AdoptionCaliforniaChild Health Services
Dr. Mark Oscherwitz, MD
NPI1437225059
- Medicare services, 2018
- 228
- Part D claims, 2019
- 25
- Publications
- 6
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 1199 Bush Street, San Francisco, CA 94109
- Practice phone
- Call (415) 673-7600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Francisco Internal Medicine Assoc A Medical Group
Primary care practice · San Francisco, California
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Dr. Mark Oscherwitz is an internist in San Francisco, California
Dr. Oscherwitz practices at San Francisco Internal Medicine Assoc A Medical Group in San Francisco, California.
Dr. Oscherwitz's NPI, 1437225059, was assigned on November 27, 2006. Dr. Oscherwitz graduated from University Of Cincinnati College Of Medicine in 1957. Dr. Oscherwitz's California license number on file is C020057.
NPI and contact details
- NPI
- 1437225059NPI Registry (opens in a new tab)
- NPI enumeration date
- November 27, 2006
- NPI status
- Active
- Practice phone
- (415) 673-7600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1957
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Oscherwitz practices at San Francisco Internal Medicine Assoc A Medical Group in San Francisco, California
Dr. Oscherwitz's primary practice is San Francisco Internal Medicine Assoc A Medical Group, at 1199 Bush Street, San Francisco, CA 94109. The practice phone is (415) 673-7600.
- San Francisco Internal Medicine Assoc A Medical Group1199 Bush Street, San Francisco, CA 94109Phone(415) 673-7600
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Oscherwitz is affiliated with 1 site of care and 1 medical group
Dr. Oscherwitz's primary practice is San Francisco Internal Medicine Assoc A Medical Group in San Francisco, California. Dmand AI also links Dr. Oscherwitz to 1 medical group, named with a free account.
San Francisco Internal Medicine Assoc A Medical GroupPrimary
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Mark Oscherwitz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oscherwitz practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Francisco Internal Medicine Assoc A Medical Group | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Oscherwitz is one of 16,751 internists in California
Internal medicine is Dr. Oscherwitz's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Oscherwitz is board certified in internal medicine by the American Board of Internal Medicine. Dr. Oscherwitz has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Oscherwitz
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 Oscherwitz billed Medicare for 228 services in 2018
CMS data shows 228 Medicare services from Dr. Oscherwitz across 5 procedure codes in 2018. Medicare paid $15,450 for them. Every service was in an office.
Medicare services, 2018228
Paid by Medicare$15,450
Procedure codes5
Dr. Oscherwitz's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 3012018: 17741%
- Other services
- 2017: 712018: 5128%
- Tests and treatments
- 2017: 402018: 0100%
Dr. Oscherwitz compared with the California median for internists, 2018
- Dr. Oscherwitz
- California median
- Medicare services
- 228vs 36137% below
- Part D claims
- 25vs 42194% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Oscherwitz's most billed Medicare procedure codes, 2018
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Oscherwitz?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oscherwitz and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Oscherwitz's patients have a median age of 77
Across all payers, Dmand AI patient panel data puts Dr. Oscherwitz's median patient age at 77, with 40% women.
Dr. Oscherwitz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Mark Oscherwitz wrote 25 Medicare Part D claims in 2019
In 2019, Dr. Oscherwitz wrote 25 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $456 in total drug cost. In 2018, CMS named 603 claims across 24 drugs.
Part D claims, 201925
Drugs named by CMS2
Total drug cost$456
Dr. Oscherwitz's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 6032019: 2596%
Drugs named by CMS: 2 in 2019, 24 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Mark Oscherwitz has 6 publications on record
Dmand AI links 6 papers to Dr. Oscherwitz. The most frequent topics are California, Coronary Disease and Myocardial Infarction.
Papers6
Topics Dr. Oscherwitz writes about most
- California
- Coronary Disease
- Myocardial Infarction
- Smoking
- Spirometry
Recent publications by Dr. Oscherwitz
Anterior Wall Myocardial InfarctionCardiovascular DiseasesElectronic Data Processing
Asian PeopleBlack or African AmericanBlack People
JAMA
AerosolsBronchodilator AgentsCough
J Chronic Dis
Birth OrderCoronary DiseaseLongevity
See who Dr. Oscherwitz researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Oscherwitz 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 Oscherwitz graduated from University Of Cincinnati College Of Medicine
Dr. Oscherwitz graduated from University Of Cincinnati College Of Medicine in 1957. Dr. Oscherwitz is a member of ACC.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Oscherwitz'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 | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Oscherwitz
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 Oscherwitz's NPI number?
Dr. Mark Oscherwitz's NPI number is 1437225059. It was assigned on November 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Oscherwitz?
Dr. Mark Oscherwitz 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 Oscherwitz practice?
Dr. Oscherwitz practices at 1199 Bush Street, San Francisco, CA 94109. Dr. Oscherwitz's primary practice is San Francisco Internal Medicine Assoc A Medical Group in San Francisco, California. Dmand AI also links Dr. Oscherwitz to 1 medical group.
What is Dr. Mark Oscherwitz's office phone number?
The practice phone on file for Dr. Oscherwitz is (415) 673-7600.
What is Dr. Mark Oscherwitz's medical license number?
Dr. Oscherwitz's California license number on file is C020057.
Does Dr. Mark Oscherwitz accept Medicare?
Yes. CMS data shows Dr. Oscherwitz billed Medicare for 228 services in 2018.
Is Dr. Mark Oscherwitz board certified?
Yes. Dr. Oscherwitz is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Mark Oscherwitz bill to Medicare?
In 2018, Dr. Oscherwitz's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0446).
Where did Dr. Mark Oscherwitz go to medical school?
Dr. Oscherwitz graduated from University Of Cincinnati College Of Medicine in 1957.
What drugs does Dr. Mark Oscherwitz prescribe most?
In 2019 Medicare Part D data, Dr. Oscherwitz's most prescribed drugs by claims were Losartan Potassium and Atorvastatin Calcium.
How long has Dr. Mark Oscherwitz been practicing?
Dr. Oscherwitz graduated from medical school in 1957, 69 years ago.
Does Dr. Mark Oscherwitz do research?
Dmand AI links 6 publications to Dr. Oscherwitz.
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