Bert Williams M.D. LLC
NPI 1871781435 · Urology Physician · Frederick, MD
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bert Williams M.D. LLC is a Urology Physician organization in Frederick, MD (NPI 1871781435).
Provider details
- NPI number
- 1871781435
- Entity type
- Organization
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Bert Williams, Physician/Doctor(301) 694-0414
- License
- D0054397 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Mid-Maryland Urologic Services
Registry dates
- Enumerated
- 2007-10-09
- Last updated
- 2014-05-29
Frequently asked questions
- What is Bert Williams M.D. LLC's NPI number?
- Bert Williams M.D. LLC's National Provider Identifier (NPI) is 1871781435, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Bert Williams M.D. LLC?
- Bert Williams M.D. LLC is classified in the NPPES registry as Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Bert Williams M.D. LLC located?
- Bert Williams M.D. LLC's practice location on file with NPPES is 97 Thomas Johnson Dr, Frederick, MD 21702-4379.
- What is Bert Williams M.D. LLC's phone number?
- The practice phone number listed in the NPPES registry for Bert Williams M.D. LLC is (301) 694-0414.
- Does Bert Williams M.D. LLC accept Medicare?
- Bert Williams M.D. LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Bert Williams M.D. LLC?
- The authorized official listed on Bert Williams M.D. LLC's NPPES record is Bert Williams, Physician/Doctor. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Bert Williams M.D. LLC's NPI active?
- Yes — Bert Williams M.D. LLC's NPI (1871781435) is active in the NPPES registry as of the last update on 2014-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.