Karen M. Williams, MD
Family Medicine Physician · Huntsville, AL
Karen M. Williams, MD is a family medicine physician with a practice address in Huntsville, Alabama, and NPI 1942244074, issued on Jun 16, 2006. Check the license (Alabama 23628, as entered in NPPES) on the Alabama Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Karen M. Williams
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 23628 AL
36268 TN
Self-reported in NPPES; status is on the state search - Practice location
- 2410 Commerce CT SW, Huntsville, AL 35801
- Phone
- (256) 539-7722
- Enumerated
- Jun 16, 2006
- Record last updated
- Dec 29, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (256) 539-1816
- Medicare enrollment
- Enrolled (PECOS I20090903000428); accepts Medicare assignment
- Medical or professional school
- University Of Alabama School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,996 in Alabama → Look up another NPI →
Also registered at 2410 Commerce CT SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Bramm, MDSpecialist1083687446
- Rebecca Conway, MDSpecialist1821060575
- William Huff, MDSpecialist1477525129
- Durgamani Yellumahanthi, M.D.Family Medicine Physician1760711915
Verify Karen M. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlabama Board of Medical Examiners
Search for license 23628Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average family medicine physician in 2024
4,356 Medicare Part D claims for 294 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 139 claims were for opioids.
Most prescribed
- Amlodipine Besylate212 claims
- Atorvastatin Calcium190 claims
- Rosuvastatin Calcium141 claims
- Levothyroxine Sodium129 claims
- Synthroid126 claims
- Lisinopril117 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Family Medicine OF Huntsville, PCHuntsville, AL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen M. Williams among 1,996 family medicine physician records in Alabama
Karen M. Williams, MD is one of 1,996 family medicine physician records with a practice address in Alabama. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 52% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2002 · median 2005 among the 1,346 with a school on file
- Record last updated2009 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Alabama practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
168 family medicine physician records list a practice address in Huntsville
They are 168 of the 5,555 NPPES records with a practice address in Huntsville, and 1,996 family medicine physician records in Alabama.
All 1,996 in Alabama → Every provider in Huntsville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- John Blankenship, DOHuntsville, AL 358011013994342
- David Calderwood, MDHuntsville, AL 358011235110586
- Michael Carter, M.D.Huntsville, AL 358011427045152
- James Chambers, M.D.Huntsville, AL 358011598765588
- Norman Ervin, M. D.Huntsville, AL 358011821089012
- Tobin Fisher, MDHuntsville, AL 358011447231014
- Forest Herrington, MDHuntsville, AL 358011417938085
- Herbert Holdsambeck, MDHuntsville, AL 358011649251216
Common questions
What is Karen M. Williams, MD's NPI number?
Karen M. Williams, MD's National Provider Identifier (NPI) is 1942244074, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen M. Williams, MD located?
The NPPES record lists a practice address at 2410 Commerce CT SW, Huntsville, AL, 35801. Phone: (256) 539-7722. Providers update this record themselves, so call before visiting.
How can I verify Karen M. Williams, MD's license?
NPPES lists Alabama license number 23628, as entered by the provider. Search the Alabama Board of Medical Examiners at https://www.albme.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen M. Williams, MD prescribe under Medicare Part D?
In 2024, Karen M. Williams, MD had 4,356 Medicare Part D claims for 294 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.