DR. SAMUEL LEVITICUS WILLIAMS III MD
NPI 1659572956
Psychiatry & Neurology - Psychiatry in Baltimore, MD
About Dr. Samuel Leviticus Williams Iii Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SAMUEL LEVITICUS WILLIAMS III MD (NPI 1659572956) is an individual psychiatry provider in Baltimore, Maryland, licensed in Maryland (D0076276) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2005).
NPPES Registry Identity
Specialties & Licenses 2
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. Samuel Leviticus Williams Iii 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 Samuel Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hyattsville, MD 20783
- Reassigned Medicare billing, District of Columbia enrollment
- Medicare enrollment name: Marys Center For Maternal And Child Care Inc
- 175 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 21230 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21230
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 Samuel Williams's NPI number?
The NPI number for Samuel Williams is 1659572956. It was assigned to this individual provider in the NPPES registry on May 31, 2007.
Where is Samuel Williams located?
Samuel Williams practices at 1111 Washington Blvd, Baltimore, MD 21230. The listed phone number is (410) 383-8300.
What is Samuel Williams's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Samuel Williams enrolled in Medicare?
Yes. Samuel 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 organization bills Medicare for Samuel Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Samuel Williams reassigns Medicare benefits to Mary's Center For Maternal And Child Care, Inc. (Hyattsville, MD). 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 Samuel 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 Samuel Williams was last updated on November 27, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. Samuel Leviticus Williams III, MD · NPI 1659572956
Psychiatry physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since May 31, 2007.
## Identity
- **NPI:** 1659572956 (Entity type: Individual)
- **Enumerated:** May 31, 2007
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** D0076276 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 1111 WASHINGTON BLVD, Baltimore, MD 21230-1824
- **Phone:** (410) 383-8300 · **Fax:** (410) 383-3160
## 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:** Mary's Center For Maternal And Child Care, Inc. (NPI 1194077297, Hyattsville, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** November 27, 2019
- **Other identifiers:** Medicaid 123305000 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1659572956) · Data from the CMS NPPES public registry.