William Henry Johnson, M.D.,
Nephrology Physician · Frederick, MD
William Henry Johnson, M.D., is a nephrology physician with a practice address in Frederick, Maryland, and NPI 1134118326, issued on Oct 19, 2005. Check the license (Maryland D0047556, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- William Henry Johnson
- Credential
- M.D.,
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- D0047556 MD
Self-reported in NPPES; status is on the state search - Practice location
- 140 Thomas Johnson Dr, Frederick, MD 21702
- Phone
- (301) 694-7788
- Enumerated
- Oct 19, 2005
- Record last updated
- Feb 25, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (301) 694-3184
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 337 in Maryland → Look up another NPI →
Also registered at 140 Thomas Johnson Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kiran Samindla, M.DNephrology Physician1932300845
Verify William Henry Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0047556Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average nephrology physician in 2024
18 Medicare Part D claims, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $19.57
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
William Henry Johnson among 337 nephrology physician records in Maryland
William Henry Johnson, M.D., is one of 337 nephrology physician records with a practice address in Maryland. 80% 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, 85% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2008 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Maryland
There are 337 nephrology physician records in Maryland.
All 337 in Maryland → Every provider in Frederick → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Muneeb Malik, MDFrederick, MD 217021619900982
- Kiran Samindla, M.DFrederick, MD 217021932300845
- Anita Nahar, MDFrederick, MD 217031659369684
- Anitha Nallu, MDFrederick, MD 217031164530275
- Rohan Rengen, D.O.Frederick, MD 217031609067792
- Branislav Romanic, MDFrederick, MD 217041649239153
- Anwar Iqbal, MDHagerstown, MD 217421174856090
- Padmaja Kolachana, M.D.Hagerstown, MD 217421316979305
Common questions
What is William Henry Johnson, M.D.,'s NPI number?
William Henry Johnson, M.D.,'s National Provider Identifier (NPI) is 1134118326, issued on Oct 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Henry Johnson, M.D., located?
The NPPES record lists a practice address at 140 Thomas Johnson Dr, Frederick, MD, 21702. Phone: (301) 694-7788. Providers update this record themselves, so call before visiting.
How can I verify William Henry Johnson, M.D.,'s license?
NPPES lists Maryland license number D0047556, 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 William Henry Johnson, M.D., prescribe under Medicare Part D?
In 2024, William Henry Johnson, M.D., had 18 Medicare Part D claims; the average among nephrology physician prescribers was 1,465. 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.