Dr. Eric R. Hahn, MD
- Part D claims, 2024
- 111
- Industry payments
- $105
- Medical group
- 1
- Insurance carriers
- 2
- State licenses
- 2
- Practice address
- 901 Nevin Ave, Richmond, CA 94801
- Practice phone
- Call (510) 307-1555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Richmond Medical Center
Richmond, 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. Eric R. Hahn is a general surgeon in Richmond, California
Dr. Hahn practices at Richmond Medical Center in Richmond, California.
Dr. Hahn's NPI, 1518031129, was assigned on November 17, 2006. Dr. Hahn graduated from University Of Michigan Medical School in 1995. Dr. Hahn's California license number on file is A87817.
- NPI
- 1518031129NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002868593
- NPI enumeration date
- November 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 307-1555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Eric R. Hahn practices at Richmond Medical Center in Richmond, California
Dr. Hahn's primary practice is Richmond Medical Center, at 901 Nevin Ave, Richmond, CA 94801 in Contra Costa County. The practice phone is (510) 307-1555.
- Richmond Medical Center901 Nevin Ave, Richmond, CA 94801 · Contra Costa CountyPhone(510) 307-1555
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Eric R. Hahn is affiliated with 1 site of care and 1 medical group
Dr. Hahn's primary practice is Richmond Medical Center in Richmond, California. The medical group on file is The Permanente Medical Group, Inc.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Eric R. Hahn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hahn practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Richmond Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Eric R. Hahn is one of 2,926 general surgeons in California
Surgery is Dr. Hahn's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Hahn is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Hahn's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Surgery, CaliforniaPrimary
- Ohio license
Clinical focus
Dmand AI lists gallbladder removal and gastrointestinal obstruction among the conditions Dr. Hahn treats.
General surgeons near Dr. Hahn
Counts of general surgeons 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. Eric R. Hahn's patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Hahn's median patient age at 57, with 42% women.
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 57
Patient panel by sex, all payers
- Women42%
- Men58%
Source: Dmand AI Patient Panel Data
Dr. Eric R. Hahn wrote 111 Medicare Part D claims in 2024
In 2024, Dr. Hahn wrote 111 Medicare Part D claims for 67 patients. 100% of them were for generic drugs. CMS names the drug for 81 of them, across 2 drugs with 11 or more claims each, at $559 in total drug cost. In 2023, CMS named 51 claims across 1 drug.
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
- Opioids50%56 of 111 claims
- Antibiotics17%19 of 111 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: 512024: 8159%
Drugs named by CMS: 2 in 2024, 1 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. Eric R. Hahn takes part in Medicare
Dr. Hahn 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. Eric R. Hahn received $105 in industry payments in 2024
CMS Open Payments shows 2 general payments to Dr. Hahn from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Ethicon Inc. paid the most, $105.
Companies that paid Dr. Hahn the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Eric R. Hahn graduated from University Of Michigan Medical School
Dr. Hahn graduated from University Of Michigan Medical School in 1995.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Eric R. Hahn accepts plans from 2 insurance carriers
Dr. Hahn is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Hahn accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Eric R. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| 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) |
| 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. Eric R. 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. Eric R. Hahn's NPI number?
Dr. Eric R. Hahn's NPI number is 1518031129. It was assigned on November 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Eric R. Hahn?
Dr. Eric R. Hahn is a general surgeon in Richmond, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Eric R. Hahn practice?
Dr. Hahn practices at 901 Nevin Ave, Richmond, CA 94801. Dr. Hahn's primary practice is Richmond Medical Center in Richmond, California.
What is Dr. Eric R. Hahn's office phone number?
The practice phone on file for Dr. Hahn is (510) 307-1555.
What is Dr. Eric R. Hahn's medical license number?
Dr. Hahn's California license number on file is A87817, one of the licenses on file in 2 states.
Which states has Dr. Eric R. Hahn been licensed in?
Dmand AI has state licenses on file for Dr. Hahn in California (2004 to 2025) and Ohio (1999 to 2008).
What medical group is Dr. Eric R. Hahn part of?
Dr. Hahn is linked to The Permanente Medical Group, Inc.
Does Dr. Eric R. Hahn accept Medicare?
Yes. CMS lists Dr. Hahn as accepting Medicare assignment.
Is Dr. Eric R. Hahn board certified?
Yes. Dr. Hahn is board certified in surgery by the American Board of Surgery.
Where did Dr. Eric R. Hahn go to medical school?
Dr. Hahn graduated from University Of Michigan Medical School in 1995.
Show 4 more questionsShow fewer questions
What drugs does Dr. Eric R. Hahn prescribe most?
In 2024 Medicare Part D data, Dr. Hahn's most prescribed drugs by claims were Oxycodone HCl and Ibuprofen.
Has Dr. Eric R. Hahn received payments from drug or device companies?
CMS Open Payments shows $105 in general payments to Dr. Hahn from 1 company from 2024 to 2024. The largest total came from Ethicon Inc.
How long has Dr. Eric R. Hahn been practicing?
Dr. Hahn graduated from medical school in 1995, 31 years ago.
What insurance does Dr. Eric R. Hahn accept?
Dr. Hahn is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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