Dr. Ruth A. Hahn, MD
- Medicare services, 2024
- 2,320
- Medicare patients, 2024
- 647
- Part D claims, 2024
- 3,120
- MIPS score, 2024
- 9
- Industry payments
- $34
- Practice address
- 2361 East 29th Street, Oakland, CA 94606
- Practice phone
- Call (510) 534-3637
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Oakland Heights Nursing and Rehabilitation
Skilled Nursing Facility · Oakland, California
Find Dr. Hahn'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. Ruth A. Hahn is an OB-GYN in Oakland, California
Dr. Hahn practices at Oakland Heights Nursing and Rehabilitation in Oakland, California.
Dr. Hahn's NPI, 1528118262, was assigned on January 12, 2007. Dr. Hahn graduated from George Washington University School of Medicine and Health Sciences in 2002. Dr. Hahn holds California license A88964.
- NPI
- 1528118262NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991845919
- NPI enumeration date
- January 12, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 534-3637
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruth A. Hahn practices at Oakland Heights Nursing and Rehabilitation in Oakland, California
Dr. Hahn's primary practice is Oakland Heights Nursing and Rehabilitation, at 2361 East 29th Street, Oakland, CA 94606 in Alameda County. The practice phone is (510) 534-3637.
- Oakland Heights Nursing and Rehabilitation2361 East 29th Street, Oakland, CA 94606 · Alameda CountyPhone(510) 534-3637
Source: Dmand AI Affiliation Data
Dr. Ruth A. Hahn is affiliated with 3 sites of care and 4 medical groups
Dr. Hahn's primary practice is Oakland Heights Nursing and Rehabilitation in Oakland, California. The medical group on file is SNF Specialists Medical Corporation. Dmand AI also links Dr. Hahn to 3 more medical groups, 1 group practice or clinic and 1 skilled nursing facility, 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 A. Hahn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hahn practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Oakland Heights Nursing and Rehabilitation | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ruth A. Hahn is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Hahn's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Hahn is licensed in California.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
OB-GYNs near Dr. Hahn
Counts of OB-GYNs 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 A. Hahn billed Medicare for 2,320 services in 2024
CMS data shows 2,320 Medicare services from Dr. Hahn across 6 procedure codes in 2024, for 647 Medicare patients. Medicare paid $225,426 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hahn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,4842024: 2,3207%
Dr. Hahn compared with the California median for OB-GYNs, 2024
- Dr. Hahn
- California median
- Medicare services
- 2,320vs 5840.0 times
- Medicare patients
- 647vs 5212.4 times
- Part D claims
- 2,559vs 3573.1 times
Medians across 3,823 OB-GYNs in California with Dmand AI profiles that report each measure.
Dr. Hahn'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hahn and other OB-GYNs in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ruth A. Hahn treated 647 Medicare patients in 2024, average age 76
CMS counts 647 Medicare patients who saw Dr. Hahn in 2024. The largest group is 75 to 84, with 210 patients. 75% of them have high blood pressure, and 67% have high cholesterol. 77% are also on Medicaid. Their average risk score is 2.54, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Hahn's median patient age at 78, with 53% women.
Dr. Hahn's Medicare patients by age, 2024
Dr. Hahn's Medicare patients by sex, 2024
- Women34253%
- Men30547%
Chronic conditions among Dr. Hahn's Medicare patients, 2024
- High blood pressure75%
- High cholesterol67%
- Mood disorders56%
- Depression48%
- Anxiety44%
- Alzheimer's and dementia43%
- Arthritis41%
- Chronic kidney disease40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hahn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women53%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ruth A. Hahn wrote 3,120 Medicare Part D claims in 2024
In 2024, Dr. Hahn wrote 3,120 Medicare Part D claims for 229 patients. 83% of them were for generic drugs. CMS names the drug for 2,559 of them, across 71 drugs with 11 or more claims each, at $175,840 in total drug cost. In 2023, CMS named 931 claims across 40 drugs.
Dr. Hahn's Part D claims by kind of drug, 2024
- Generic2,600 claims83%
- Brand-name and other520 claims17%
Dr. Hahn'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. Hahn's Part D claims, 2024
- Opioids3%89 of 3,120 claims
- Antibiotics2%77 of 3,120 claims
- Antipsychotics, patients 65 and over3%88 of 3,120 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: 9312024: 2,559175%
Drugs named by CMS: 71 in 2024, 40 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
Dr. Ruth A. Hahn scored 9 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 9 out of 100 for Dr. Hahn for performance year 2024, reported individually. Dr. Hahn accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Hahn's MIPS scores, performance year 2024
- 9of 100Final score
- 0of 100Quality
- 0of 100Promoting Interoperability
- 0of 100Improvement Activities
- 32of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Ruth A. Hahn received $34 in industry payments from 2016 to 2020
CMS Open Payments shows 2 general payments to Dr. Hahn from 2 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. Vertical Pharmaceuticals, LLC paid the most, $23.
General payments to Dr. Hahn by program year, 2016 to 2020
Companies that paid Dr. Hahn the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ruth A. Hahn graduated from George Washington University School of Medicine and Health Sciences
Dr. Hahn graduated from George Washington University School of Medicine and Health Sciences in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Ruth A. Hahn accepts plans from 2 insurance carriers
Dr. Hahn is in network with 2 carriers, including CMS Medicare and NV State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
- NV State Medicaid
Plan types Dr. Hahn accepts, by number of carriers
- Medicaid1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ruth A. Hahn'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)Clinician Public Reporting: Overall MIPS Performance (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 A. Hahn
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 A. Hahn's NPI number?
Dr. Ruth A. Hahn's NPI number is 1528118262. It was assigned on January 12, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruth A. Hahn?
Dr. Ruth A. Hahn is an OB-GYN in Oakland, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Ruth A. Hahn practice?
Dr. Hahn practices at 2361 East 29th Street, Oakland, CA 94606. Dr. Hahn's primary practice is Oakland Heights Nursing and Rehabilitation in Oakland, California. Dmand AI also links Dr. Hahn to 3 medical groups, 1 group practice or clinic and 1 skilled nursing facility.
What is Dr. Ruth A. Hahn's office phone number?
The practice phone on file for Dr. Hahn is (510) 534-3637.
What is Dr. Ruth A. Hahn's medical license number?
Dr. Hahn holds California license A88964.
What medical group is Dr. Ruth A. Hahn part of?
Dr. Hahn is linked to SNF Specialists Medical Corporation. Dmand AI links Dr. Hahn to 3 more medical groups.
Does Dr. Ruth A. Hahn accept Medicare?
Yes. CMS data shows Dr. Hahn billed Medicare for 2,320 services in 2024, and Dr. Hahn accepts Medicare assignment.
What is Dr. Ruth A. Hahn's MIPS score?
Dr. Hahn's MIPS final score for performance year 2024 is 9 out of 100, reported individually.
How many Medicare patients does Dr. Ruth A. Hahn see?
CMS counts 647 Medicare patients who saw Dr. Hahn in 2024, with an average age of 76.
What services does Dr. Ruth A. Hahn bill to Medicare?
In 2024, Dr. Hahn's most billed Medicare services were nursing facility care (99309), nursing facility care (99310) and nursing facility care (99306).
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Where did Dr. Ruth A. Hahn go to medical school?
Dr. Hahn graduated from George Washington University School of Medicine and Health Sciences in 2002.
What drugs does Dr. Ruth A. Hahn prescribe most?
In 2024 Medicare Part D data, Dr. Hahn's most prescribed drugs by claims were Atorvastatin Calcium, Gabapentin and Levothyroxine Sodium.
Has Dr. Ruth A. Hahn received payments from drug or device companies?
CMS Open Payments shows $34 in general payments to Dr. Hahn from 2 companies from 2016 to 2020. The largest total came from Vertical Pharmaceuticals, LLC.
How long has Dr. Ruth A. Hahn been practicing?
Dr. Hahn graduated from medical school in 2002, 24 years ago.
What insurance does Dr. Ruth A. Hahn accept?
Dr. Hahn is in network with 2 carriers, including CMS Medicare and NV State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
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