DR. WILLIAM CLARK GRAY M.D.
NPI 1942239496
Otolaryngology in Baltimore, MD
About Dr. William Clark Gray M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM CLARK GRAY M.D. (NPI 1942239496) is an individual otolaryngology provider in Baltimore, Maryland, licensed in Maryland (D17424) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (1973).
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. William Clark Gray M.d. 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 Reassignments
2Medicare enrollment records show William Gray reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- 966 clinicians in this Medicare group
Halethorpe, MD 21227
- Reassigned Medicare billing, Maryland and District of Columbia enrollments
- Also billed through NPI 1952461816 (District of Columbia)
- 1,253 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21201 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21201
BALTIMORE, MD 21201
BALTIMORE, MD 21201
BALTIMORE, MD 21201
BALTIMORE, MD 21201
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 William Gray's NPI number?
The NPI number for William Gray is 1942239496. It was assigned to this individual provider in the NPPES registry on June 30, 2006.
Where is William Gray located?
William Gray practices at 16 S Eutaw St Suite 500, Baltimore, MD 21201. The listed phone number is (410) 328-5828.
What is William Gray's specialty?
The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.
Is William Gray enrolled in Medicare?
Yes. William Gray 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 organizations bill Medicare for William Gray's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Gray reassigns Medicare benefits to 2 organizations: University Of Maryland Community Medical Group, Inc. (Baltimore, MD) and Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Halethorpe, MD). Each 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 William Gray'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 William Gray was last updated on June 9, 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. William Clark Gray, M.D. · NPI 1942239496
Otolaryngology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since June 30, 2006.
## Identity
- **NPI:** 1942239496 (Entity type: Individual)
- **Enumerated:** June 30, 2006
- **Primary specialty:** Otolaryngology · taxonomy 207Y00000X
- **State license:** D17424 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 16 S EUTAW ST, SUITE 500, Baltimore, MD 21201-1606
- **Phone:** (410) 328-5828 · **Fax:** (410) 328-5827
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Maryland Community Medical Group, Inc. (NPI 1477530624, Baltimore, MD); Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1417294984, Halethorpe, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** George Washington University School Of Medicine, class of 1973
## Record status
- **NPPES last updated:** June 9, 2021
- **Other identifiers:** Medicaid 914651200 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1942239496) · Data from the CMS NPPES public registry.