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AARON J EPSTEIN MD INC
NPI 1225649353
Obstetrics & Gynecology - Maternal & Fetal Medicine in Pasadena, CA

Active since August 12, 2020CLIA Certified · 4 labs
50 ALESSANDRO PL STE 210, PASADENA, CA 91105(626) 514-0060(626) 514-0062 Get Directions Write a Review

NPPES record last updated: December 28, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 30, 2021, Aug 12, 2020 (2 updates tracked since 2020).

About Aaron J Epstein Md Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

AARON J EPSTEIN MD INC (NPI 1225649353) is a healthcare organization registered as a maternal & fetal medicine in Pasadena, California and active in the NPI registry since August 2020. The organization holds 4 active CLIA laboratory certificates and lists Aaron J Epstein, Owner, as its authorized official.

NPPES Registry Identity

NPI1225649353
Entity TypeOrganization
Primary Taxonomy207VM0101X
Legal Business NameAARON J EPSTEIN MD INC
Location Address50 ALESSANDRO PL STE 210Pasadena, CA 91105-4005
Mailing Address50 Alessandro Pl Ste 210Pasadena, CA 91105-4005 · (626) 514-0060 · Fax (626) 514-0062
Phone(626) 514-0060
Fax(626) 514-0062
Organization SubpartNo
Authorized OfficialAaron J EpsteinOwner · (818) 281-5106
Enumeration DateAugust 12, 2020
Last NPPES UpdateDecember 28, 20232 updates tracked since enumeration
NPPES CertifiedDecember 28, 2023
✔ NPI 1225649353 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
50 ALESSANDRO PL STE 210, Pasadena, CA 91105
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Aaron J Epstein Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Aaron J Epstein MD Inc, which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.

Clinicians, nearest first (4)

Inessa Dombrovsky, DO
Obstetrics/Gynecology
NPI 1598151771
50 ALESSANDRO PL STE 210
Pasadena, CA 91105
(626) 514-0060
✔ PECOSSame address
Aaron Epstein, M.D.
Obstetrics/Gynecology
NPI 1134371743
50 ALESSANDRO PL STE 210
Pasadena, CA 91105
(626) 514-0060
✔ PECOS✔ Accepts MedicareSame address
Bhuvan Martin, M.D.
Obstetrics/Gynecology
NPI 1538344205
50 ALESSANDRO PL STE 210
Pasadena, CA 91105
(626) 514-0060
✔ PECOS✔ Accepts MedicareSame address
Patrick Mullin, MD
Obstetrics/Gynecology
NPI 1255345203
50 ALESSANDRO PL STE 210
Pasadena, CA 91105
(626) 514-0060
✔ PECOSSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA 4

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2317564

Aaron J Epstein, MD Inc · Pasadena, CA
Active · expires Jan 26, 2027
CLIA Number05D2317564
Laboratory TypePhysician Office
Certificate Effective DateJanuary 27, 2025
Certificate Expiration DateJanuary 26, 2027
Laboratory DirectorAaron Epstein
Laboratory Phone(626) 514-0060
Laboratory LocationAaron J Epstein, MD Inc50 Alessandro Pl Ste 210, Pasadena, CA 91105
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 05D2319675

Aaron J Epstein, MD Inc · Los Angeles, CA
Active · expires Mar 4, 2027
CLIA Number05D2319675
Laboratory TypePhysician Office
Certificate Effective DateMarch 5, 2025
Certificate Expiration DateMarch 4, 2027
Laboratory DirectorAaron J. Epstein
Laboratory Phone(626) 514-0060
Laboratory LocationAaron J Epstein, MD Inc1100 Wilshire Blvd Suite 301, Los Angeles, CA 90017
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 05D2319677

Aaron J Epstein, MD Inc · Lancaster, CA
Active · expires Mar 4, 2027
CLIA Number05D2319677
Laboratory TypePhysician Office
Certificate Effective DateMarch 5, 2025
Certificate Expiration DateMarch 4, 2027
Laboratory DirectorAaron J. Epstein
Laboratory Phone(626) 514-0060
Laboratory LocationAaron J Epstein, MD Inc44215 15th Street West Suite 114, Lancaster, CA 93534
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 05D2319466

Aaron J Epstein, MD Inc · Burbank, CA
Active · expires Feb 27, 2027
CLIA Number05D2319466
Laboratory TypePhysician Office
Certificate Effective DateFebruary 28, 2025
Certificate Expiration DateFebruary 27, 2027
Laboratory DirectorAaron J. Epstein
Laboratory Phone(626) 514-0060
Laboratory LocationAaron J Epstein, MD Inc2625 West Alameda Ave Suite 410, Burbank, CA 91505
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Aaron J Epstein MD Inc's NPI number?

The NPI number for Aaron J Epstein MD Inc is 1225649353. It was assigned to this organization in the NPPES registry on August 12, 2020.

Where is Aaron J Epstein MD Inc located?

Aaron J Epstein MD Inc is located at 50 Alessandro Pl Ste 210, Pasadena, CA 91105. The listed phone number is (626) 514-0060.

What is Aaron J Epstein MD Inc's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Aaron J Epstein MD Inc enrolled in Medicare?

Yes. Aaron J Epstein MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Aaron J Epstein MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians, all in Obstetrics/Gynecology, reassign their Medicare billing to Aaron J Epstein MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Aaron J Epstein MD Inc hold CLIA laboratory certificates?

Yes. 4 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

When was this NPI record last updated?

The NPPES record for Aaron J Epstein MD Inc was last updated on December 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.