Mark Frederic Williams, M.D.
Otolaryngology Physician · Lutherville, MD
Mark Frederic Williams, M.D. is an otolaryngology physician with a practice address in Lutherville, Maryland, and NPI 1104820828, issued on Jun 9, 2005. Check the license (Maryland D0043030, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mark Frederic Williams
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- D0043030 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1205 York RD, Lutherville, MD 21093
- Phone
- (410) 494-7060
- Enumerated
- Jun 9, 2005
- Record last updated
- Apr 8, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (410) 832-5202
- Medicaid ID
- 076331400 MD
- Medicare enrollment
- Enrolled (PECOS I20110128000187); accepts Medicare assignment
- Medical or professional school
- Medical College Of Georgia School Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 257 in Maryland → Look up another NPI →
Also registered at 1205 York RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Veronica Altvater, LCPCProfessional Counselor1952586810
- Bruce Beacham, MDDermatology Physician1386625861
- Judith Berg, LCSW-CClinical Social Worker1770847592
- Gilbert Bliss, LCSW-CClinical Social Worker1265755961
- Krystyna Blotny, M.D.Pediatrics Physician1538114319
Verify Mark Frederic Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0043030Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average otolaryngology physician in 2024
380 Medicare Part D claims for 165 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Ipratropium Bromide55 claims
- Amoxicillin-Clavulanate Potass31 claims
- Fluticasone Propionate30 claims
- Fluocinolone Acetonide Oil22 claims
- Azelastine Hcl21 claims
- Methylprednisolone21 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
- Greater Baltimore Medical Center IncBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Frederic Williams among 257 otolaryngology physician records in Maryland
Mark Frederic Williams, M.D. is one of 257 otolaryngology physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1988 · median 2004 among the 166 with a school on file
- Record last updated2014 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Maryland
There are 257 otolaryngology physician records in Maryland.
All 257 in Maryland → Every provider in Lutherville → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Jimmy Cua, M.D.Lutherville, MD 210931033439666
- Michael Dias, MDLutherville, MD 210931942365200
- Douglas Reh, M.D.Lutherville Timonium, MD 210931982725917
- Steven Marks, M.D.Havre De Grace, MD 210781962496042
- Martin Rubin, M.D.Elkridge, MD 210751922167147
- Barry Tatar, M.D.Elkridge, MD 210751386639466
- Kevin ConnollyOwings Mills, MD 211171104352764
- Scott London, M.D.Owings Mills, MD 211171871670026
Common questions
What is Mark Frederic Williams, M.D.'s NPI number?
Mark Frederic Williams, M.D.'s National Provider Identifier (NPI) is 1104820828, issued on Jun 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Frederic Williams, M.D. located?
The NPPES record lists a practice address at 1205 York RD, Lutherville, MD, 21093. Phone: (410) 494-7060. Providers update this record themselves, so call before visiting.
How can I verify Mark Frederic Williams, M.D.'s license?
NPPES lists Maryland license number D0043030, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Frederic Williams, M.D. prescribe under Medicare Part D?
In 2024, Mark Frederic Williams, M.D. had 380 Medicare Part D claims for 165 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.