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Eileen Hahn, PA

  • Walnut Creek, CA
  • Physician assistant
NPI1861370264PAC ID1153813514
Industry payments
$25
Affiliated sites
1
Medical group
1
State license
1
Year NPI issued
2025
Practice address
1399 Ygnacio Valley Rd Ste 11d Suite 11d, Walnut Creek, CA 94598
Practice phone
Call (925) 430-5613
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Bass Medical Group - Walnut Creek (1399 Ygnacio Valley Rd)

Multi-specialty group site · Walnut Creek, California

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Eileen Hahn is a physician assistant in Walnut Creek, California

Eileen Hahn practices at Bass Medical Group - Walnut Creek (1399 Ygnacio Valley Rd) in Walnut Creek, California.

Eileen Hahn's NPI, 1861370264, was assigned on August 25, 2025. Eileen Hahn graduated from Philadelphia College of Osteopathic Medicine in 2025.

NPI and contact details
NPI
1861370264NPI Registry (opens in a new tab)
Medicare PAC ID
1153813514
NPI enumeration date
August 25, 2025
NPI status
Active
Practice phone
(925) 430-5613
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Female
Estimated age
27
Medical school graduation
2025

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Eileen Hahn practices at Bass Medical Group - Walnut Creek (1399 Ygnacio Valley Rd) in Walnut Creek, California

Eileen Hahn's primary practice is Bass Medical Group - Walnut Creek (1399 Ygnacio Valley Rd), at 1399 Ygnacio Valley Rd Ste 11d Suite 11d, Walnut Creek, CA 94598. The practice phone is (925) 430-5613.

  • Bass Medical Group - Walnut Creek (1399 Ygnacio Valley Rd)
    1399 Ygnacio Valley Rd Ste 11d Suite 11d, Walnut Creek, CA 94598Phone(925) 430-5613

Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Eileen Hahn is affiliated with 1 site of care and 1 medical group

Eileen Hahn's primary practice is Bass Medical Group - Walnut Creek (1399 Ygnacio Valley Rd) in Walnut Creek, California. The medical group on file is BASS Medical Group.

Bass Medical Group - Walnut Creek (1399 Ygnacio Valley Rd)Multi-specialty group site · Walnut Creek, CaliforniaPrimary
BASS Medical GroupPrimary care group, Walnut Creek, CA

Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dmand AI tracks the EHR system at Eileen Hahn's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Eileen Hahn practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Bass Medical Group - Walnut Creek (1399 Ygnacio Valley Rd)Available with a free account

Source: Dmand AI Technology Install Data

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Eileen Hahn is one of 11,482 physician assistants in California

Physician assistant is Eileen Hahn's primary specialty in the NPI Registry, under taxonomy code 363A00000X.

Specialties and state licenses

  • Physician assistantPrimarytaxonomy 363A00000X

Physician assistants near Eileen Hahn

Counts of physician assistants with a Dmand AI profile, by place and practice. Each opens the list.

11,482physician assistants in California73physician assistants in Walnut Creek

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Eileen Hahn's patients have a median age of 38

Across all payers, Dmand AI patient panel data puts Eileen Hahn's median patient age at 38, with 0% women.

Eileen 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 38

Patient panel by sex, all payers

  • Women0%
  • Men100%

Source: Dmand AI Patient Panel Data

Eileen Hahn received $25 in industry payments in 2025

CMS Open Payments shows 1 general payment to Eileen Hahn from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Acera Surgical, Inc. paid the most, $25.

Companies that paid Eileen Hahn the most, 2025 to 2025

Share is of all general payments to this clinician.

See all payments to Eileen Hahn

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Eileen Hahn graduated from Philadelphia College of Osteopathic Medicine

Eileen Hahn graduated from Philadelphia College of Osteopathic Medicine in 2025.

  1. Medical schoolPhiladelphia College of Osteopathic Medicine

Source: Dmand AI Professional Profile Data

Sources for Eileen Hahn's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Primary practice, affiliations and health systemDmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Eileen 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 Eileen Hahn's NPI number?

Eileen Hahn's NPI number is 1861370264. It was assigned on August 25, 2025, and it is active in the NPI Registry.

What does Eileen Hahn specialize in?

Eileen Hahn is a physician assistant in Walnut Creek, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).

Where does Eileen Hahn practice?

Eileen Hahn practices at 1399 Ygnacio Valley Rd Ste 11d Suite 11d, Walnut Creek, CA 94598. Eileen Hahn's primary practice is Bass Medical Group - Walnut Creek (1399 Ygnacio Valley Rd) in Walnut Creek, California.

What is Eileen Hahn's office phone number?

The practice phone on file for Eileen Hahn is (925) 430-5613.

What medical group is Eileen Hahn part of?

Eileen Hahn is linked to BASS Medical Group.

Where did Eileen Hahn go to medical school?

Eileen Hahn graduated from Philadelphia College of Osteopathic Medicine in 2025.

Has Eileen Hahn received payments from drug or device companies?

CMS Open Payments shows $25 in general payments to Eileen Hahn from 1 company from 2025 to 2025. The largest total came from Acera Surgical, Inc.

How long has Eileen Hahn been practicing?

Eileen Hahn graduated from medical school in 2025, 1 years ago.

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