DR. BRIAN M CLARK MD
NPI 1437159795
Obstetrics & Gynecology - Reproductive Endocrinology in Millbury, MA
About Dr. Brian M Clark Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRIAN M CLARK MD (NPI 1437159795) is an individual reproductive endocrinology provider in Millbury, Massachusetts, licensed in Massachusetts (226853) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Vermont College Of Medicine (1994).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Brian M Clark Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Brian Clark reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Millbury, MA 01527
- Reassigned Medicare billing, Massachusetts enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01527 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Brian Clark's NPI number?
The NPI number for Brian Clark is 1437159795. It was assigned to this individual provider in the NPPES registry on July 28, 2005.
Where is Brian Clark located?
Brian Clark practices at 22 West St Ste 25, Millbury, MA 01527. The listed phone number is (508) 917-6720.
What is Brian Clark's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Reproductive Endocrinology, with taxonomy code 207VE0102X.
Is Brian Clark enrolled in Medicare?
Yes. Brian Clark is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Brian Clark's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brian Clark reassigns Medicare benefits to New England Reproductive Medicine And Surgery LLC (Millbury, MA). The 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 Brian Clark's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Brian Clark was last updated on March 1, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Brian M Clark, MD · NPI 1437159795
Reproductive Endocrinology physician in Millbury, Massachusetts. Individual provider, active in the CMS NPPES registry since July 28, 2005.
## Identity
- **NPI:** 1437159795 (Entity type: Individual)
- **Enumerated:** July 28, 2005
- **Primary specialty:** Obstetrics & Gynecology - Reproductive Endocrinology · taxonomy 207VE0102X
- **State license:** 226853 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 22 WEST ST STE 25, Millbury, MA 01527-2677
- **Phone:** (508) 917-6720 · **Fax:** (508) 917-6721
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** New England Reproductive Medicine And Surgery LLC (NPI 1700215670, Millbury, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Vermont College Of Medicine, class of 1994
## Record status
- **NPPES last updated:** March 1, 2021
- **Other identifiers:** Medicaid 2112191 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1437159795) · Data from the CMS NPPES public registry.