Dr. Ruth Rubin, MD
- Medicare services, 2024
- 1,166
- Medicare patients, 2024
- 180
- Part D claims, 2024
- 2,493
- Hospital affiliations
- 3
- Industry payments
- $119
- Practice address
- 250 Bon Air Road, Greenbrae, CA 94904
- Practice phone
- Call (415) 925-7900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Rubin's professional email, personal email and mobile number
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Dr. Ruth Rubin is an internist in Greenbrae, California
Dr. Rubin practices at MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District.
Dr. Rubin's NPI, 1043238041, was assigned on July 17, 2006. Dr. Rubin graduated from UC Davis School of Medicine in 1984. Dr. Rubin holds California license G55162.
- NPI
- 1043238041NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7719961580
- NPI enumeration date
- July 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 925-7900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruth Rubin practices at MarinHealth Medical Center in Greenbrae, California
Dr. Rubin's primary practice is MarinHealth Medical Center, at 250 Bon Air Road, Greenbrae, CA 94904 in Marin County. The practice phone is (415) 925-7900.
- MarinHealth Medical Center250 Bon Air Road, Greenbrae, CA 94904 · Marin CountyPhone(415) 925-7900
Source: Dmand AI Affiliation Data
Dr. Ruth Rubin is affiliated with 5 sites of care and 2 medical groups
Dr. Rubin's primary practice is MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District. Dr. Rubin is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. Rubin to 1 more hospital, 1 physician office, 1 home health agency and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ruth Rubin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rubin practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MarinHealth Medical Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ruth Rubin is one of 16,751 internists in California
Internal medicine is Dr. Rubin's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Rubin is board certified in internal medicine by the American Board of Internal Medicine. Dr. Rubin is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute skin infection, adjustment disease, anxiety, asthma, atrial fibrillation and flutter, bronchitis and carpal tunnel syndrome among the conditions Dr. Rubin treats.
Internists near Dr. Rubin
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. Ruth Rubin billed Medicare for 1,166 services in 2024
CMS data shows 1,166 Medicare services from Dr. Rubin across 11 procedure codes in 2024, for 180 Medicare patients. Medicare paid $121,076 for them. Every service was in an office.
Dr. Rubin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6062024: 6172%
- Tests and treatments
- 2023: 442024: 406823%
- Other services
- 2023: 2732024: 14348%
Dr. Rubin compared with the California median for internists, 2024
- Dr. Rubin
- California median
- Medicare services
- 1,166vs 3613.2 times
- Medicare patients
- 180vs 15119% above
- Part D claims
- 1,977vs 4214.7 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Rubin's most billed Medicare procedure codes, 2024
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. Rubin?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Rubin and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ruth Rubin treated 180 Medicare patients in 2024, average age 78
CMS counts 180 Medicare patients who saw Dr. Rubin in 2024. The largest group is 75 to 84, with 94 patients. 71% of them have high cholesterol, and 60% have high blood pressure. Their average risk score is 0.84, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Rubin's median patient age at 76, with 70% women.
Dr. Rubin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Rubin's Medicare patients by sex, 2024
- Women12469%
- Men5631%
Chronic conditions among Dr. Rubin's Medicare patients, 2024
- High cholesterol71%
- High blood pressure60%
- Arthritis50%
- Osteoporosis33%
- Ischemic heart disease22%
- Atrial fibrillation17%
- Cancer17%
- Chronic kidney disease16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rubin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women70%
- Men26%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ruth Rubin wrote 2,493 Medicare Part D claims in 2024
In 2024, Dr. Rubin wrote 2,493 Medicare Part D claims for 189 patients. 88% of them were for generic drugs. CMS names the drug for 1,977 of them, across 53 drugs with 11 or more claims each, at $96,530 in total drug cost. In 2023, CMS named 1,864 claims across 50 drugs.
Dr. Rubin's Part D claims by kind of drug, 2024
- Generic2,202 claims88%
- Brand-name and other291 claims12%
Dr. Rubin's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Rubin's Part D claims, 2024
- Opioids2%41 of 2,493 claims
- Antibiotics4%92 of 2,493 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,8642024: 1,9776%
Drugs named by CMS: 53 in 2024, 50 in 2023.
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
How Dr. Ruth Rubin takes part in Medicare
Dr. Rubin accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ruth Rubin received $119 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Rubin from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $119.
Companies that paid Dr. Rubin the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ruth Rubin graduated from UC Davis School of Medicine
Dr. Rubin graduated from UC Davis School of Medicine in 1984.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Ruth Rubin accepts plans from 13 insurance carriers
Dr. Rubin is in network with 13 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Humana
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Rubin accepts, by number of carriers
- PPO8
- Medicare7
- HMO6
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Ruth Rubin'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 Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Ruth Rubin
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. Ruth Rubin's NPI number?
Dr. Ruth Rubin's NPI number is 1043238041. It was assigned on July 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruth Rubin?
Dr. Ruth Rubin is an internist in Greenbrae, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ruth Rubin practice?
Dr. Rubin practices at 250 Bon Air Road, Greenbrae, CA 94904. Dr. Rubin's primary practice is MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District. Dmand AI also links Dr. Rubin to 1 hospital, 1 physician office, 1 home health agency and 1 medical group.
What is Dr. Ruth Rubin's office phone number?
The practice phone on file for Dr. Rubin is (415) 925-7900.
What is Dr. Ruth Rubin's medical license number?
Dr. Rubin holds California license G55162.
Which hospitals is Dr. Ruth Rubin affiliated with?
Dr. Rubin practices at MarinHealth Medical Center in Greenbrae, California. Dr. Rubin is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. Dmand AI links Dr. Rubin to 1 more hospital.
What medical group is Dr. Ruth Rubin part of?
Dr. Rubin is linked to UCSF Pediatrics. Dmand AI links Dr. Rubin to 1 more medical group.
Does Dr. Ruth Rubin accept Medicare?
Yes. CMS data shows Dr. Rubin billed Medicare for 1,166 services in 2024, and Dr. Rubin accepts Medicare assignment.
How many Medicare patients does Dr. Ruth Rubin see?
CMS counts 180 Medicare patients who saw Dr. Rubin in 2024, with an average age of 78.
Is Dr. Ruth Rubin board certified?
Yes. Dr. Rubin is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Ruth Rubin bill to Medicare?
In 2024, Dr. Rubin's most billed Medicare services were office visit, established patient (99214), vaccine or vaccine administration (90480) and office visit, established patient (99213).
Where did Dr. Ruth Rubin go to medical school?
Dr. Rubin graduated from UC Davis School of Medicine in 1984.
What drugs does Dr. Ruth Rubin prescribe most?
In 2024 Medicare Part D data, Dr. Rubin's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Rosuvastatin Calcium.
Has Dr. Ruth Rubin received payments from drug or device companies?
CMS Open Payments shows $119 in general payments to Dr. Rubin from 1 company from 2025 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Ruth Rubin been practicing?
Dr. Rubin graduated from medical school in 1984, 42 years ago.
What insurance does Dr. Ruth Rubin accept?
Dr. Rubin is in network with 13 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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