Opal Williams, MD - Medicare Family Medicine in Rockville, MD

Opal Williams, MD is a medicare enrolled "Family Medicine" physician in Rockville, Maryland. Her current practice location is 2101 E Jefferson St, Suite 6w Ppqa, Rockville, Maryland. You can reach out to her office (for appointments etc.) via phone at (301) 816-5853.

Opal Williams is licensed to practice in Maryland (license number D0081394) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1770826364.

Contact Information

Opal Williams, MD
2101 E Jefferson St, Suite 6w Ppqa,
Rockville, MD 20852-4908
(301) 816-5853
Not Available

Map and Direction




Physician's Profile

Full NameOpal Williams
GenderFemale
SpecialityFamily Medicine
Location2101 E Jefferson St, Rockville, Maryland
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1770826364
  • Provider Enumeration Date: 04/02/2013
  • Last Update Date: 04/11/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 2365668118
  • Enrollment ID: I20161214000427

Medical Identifiers

Medical identifiers for Opal Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1770826364NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 0101261173 (Virginia)Secondary
207Q00000XFamily Medicine D0081394 (Maryland)Primary
207Q00000XFamily Medicine MD044671 (District Of Columbia)Secondary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Opal Williams allows following entities to bill medicare on her behalf.
Entity NameKaiser Foundation Health Plan Of The Mid-atlantic States, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952461816
PECOS PAC ID: 3779495858
Enrollment ID: O20040105000308

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Opal Williams is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Opal Williams, MD
2101 E Jefferson St, Suite 6w Ppqa,
Rockville, MD 20852-4908

Ph: (301) 816-5853
Opal Williams, MD
2101 E Jefferson St, Suite 6w Ppqa,
Rockville, MD 20852-4908

Ph: (301) 816-5853

Reviews and Comments


Family Medicine Doctors in Rockville, MD

Fudia Kallay,
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 9909 Medical Center Dr, Rockville, MD 20850
Phone: 240-684-6150    
Dr. Jack Richard Epstein, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 121 Congressional Ln, Suite 318, Rockville, MD 20852
Phone: 301-984-8689    Fax: 301-984-4843
Dr. Hua-chuan Sim, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 10960 Bloomingdale Dr, Rockville, MD 20852
Phone: 301-801-5400    
Dr. Joseph Gebeily, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 15215 Shady Grove Road, Suite 203, Rockville, MD 20850
Phone: 301-500-0374    Fax: 301-560-5665
Jin Moon Kang, M.D.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 15225 Shady Grove Rd, Suite 102, Rockville, MD 20850
Phone: 301-330-0661    Fax: 301-977-6940
Sayed Elsayyad, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 10110 Molecular Dr Ste 114, Rockville, MD 20850
Phone: 301-780-4745    Fax: 301-605-7550
Dr. Praveen Kumar Gupta, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 50 West Edmonston Drive, #202, Rockville, MD 20852
Phone: 301-762-0788    Fax: 301-762-3130

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.