OPAL WILLIAMS M.D.
NPI 1770826364
Family Medicine in Rockville, MD
About Opal Williams M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OPAL WILLIAMS M.D. (NPI 1770826364) is an individual family medicine provider in Rockville, Maryland, licensed in Maryland (D0081394) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS, maintains a secondary practice location in Bowie, and is a graduate of Morehouse School Of Medicine (2013).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Opal Williams 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
3Medicare enrollment records show Opal Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Kensington, MD 20895
- Reassigned Medicare billing, District of Columbia enrollment
- 2,492 clinicians in this Medicare group
Silver Spring, MD 20910
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1205087517 (Maryland)
- 184 clinicians in this Medicare group
Hinesville, GA 31313
- Reassigned Medicare billing, Georgia enrollment
- 27 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 20852 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.
ROCKVILLE, MD 20852
ROCKVILLE, MD 20852
ROCKVILLE, MD 20852
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 Opal Williams's NPI number?
The NPI number for Opal Williams is 1770826364. It was assigned to this individual provider in the NPPES registry on April 2, 2013.
Where is Opal Williams located?
Opal Williams practices at 2101 E Jefferson St Suite 6W Ppqa, Rockville, MD 20852. The listed phone number is (301) 816-5853.
What is Opal Williams's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Opal Williams enrolled in Medicare?
Yes. Opal Williams 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 Opal Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Opal Williams reassigns Medicare benefits to 3 organizations: Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Kensington, MD), Patient First Maryland Medical Group PLLC (Silver Spring, MD) and Diversity Health Center Inc. (Hinesville, GA). 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 Opal Williams'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 Opal Williams was last updated on July 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.
# Opal Williams, M.D. · NPI 1770826364
Family Medicine physician in Rockville, Maryland. Individual provider, active in the CMS NPPES registry since April 2, 2013.
## Identity
- **NPI:** 1770826364 (Entity type: Individual)
- **Enumerated:** April 2, 2013
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** D0081394 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 2101 E JEFFERSON ST, SUITE 6W PPQA, Rockville, MD 20852-4908
- **Phone:** (301) 816-5853
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1376601872, Kensington, MD); Patient First Maryland Medical Group PLLC (NPI 1265866503, Silver Spring, MD); Diversity Health Center Inc. (NPI 1326594714, Hinesville, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Morehouse School Of Medicine, class of 2013
## Record status
- **NPPES last updated:** July 3, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1770826364) · Data from the CMS NPPES public registry.