William Davis McConnell, MD
Internal Medicine Physician · Baltimore, MD
William Davis McConnell, MD is an internal medicine physician with a practice address in Baltimore, Maryland, and NPI 1548215205, issued on May 23, 2006. Check the license (Maryland D42129, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- William Davis McConnell
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D42129 MD
Self-reported in NPPES; status is on the state search - Practice location
- 6301 N Charles St, Baltimore, MD 21212
- Phone
- (410) 372-0300
- Enumerated
- May 23, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (410) 372-0304
- Medicare enrollment
- Enrolled (PECOS I20040218000915); may accept Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 1982
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 6301 N Charles St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Anderson, D.D.S.General Practice Dentistry1194807453
- Iredell Iglehart, M.D.Internal Medicine Physician1841289337
- Amy Kopel, LCSW-CClinical Social Worker1831196625
- Leslie Krohn, LCSWCClinical Social Worker1598967234
- Robert Littman, M.D.Child & Adolescent Psychiatry Physician1447370796
Verify William Davis McConnell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D42129Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% more Medicare Part D claims than the average internal medicine physician in 2024
3,970 Medicare Part D claims for 289 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 45 claims were for opioids.
Most prescribed
- Atorvastatin Calcium276 claims
- Rosuvastatin Calcium257 claims
- Metoprolol Succinate161 claims
- Losartan Potassium147 claims
- Levothyroxine Sodium140 claims
- Lisinopril140 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.
The MIPS final score for 2023 (Medicare payment program): 10.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Agape Physical Therapy And Sports Rehabilitation LPForest Hill, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Davis McConnell among 3,904 internal medicine physician records in Maryland
William Davis McConnell, MD is one of 3,904 internal medicine 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1982 · median 2003 among the 2,445 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,278 internal medicine physician records list a practice address in Baltimore
They are 1,278 of the 35,183 NPPES records with a practice address in Baltimore, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Baltimore → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Gregory Branch, M.D.Baltimore, MD 212121336311380
- Iredell Iglehart, M.D.Baltimore, MD 212121841289337
- Fern Jeffries, M.D.Baltimore, MD 212121235465048
- Thomas Lacey, M.DBaltimore, MD 212121376573097
- Aye Lwin, M.DBaltimore, MD 212121538199245
- Carol Newill, M.D., PH.D.Baltimore, MD 212121720046014
- Santosh Raiker, M.DBaltimore, MD 212121598795213
- Melva Brown, M.D.Baltimore, MD 212111619935194
Common questions
What is William Davis McConnell, MD's NPI number?
William Davis McConnell, MD's National Provider Identifier (NPI) is 1548215205, issued on May 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Davis McConnell, MD located?
The NPPES record lists a practice address at 6301 N Charles St, Baltimore, MD, 21212. Phone: (410) 372-0300. Providers update this record themselves, so call before visiting.
How can I verify William Davis McConnell, MD's license?
NPPES lists Maryland license number D42129, 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 Davis McConnell, MD prescribe under Medicare Part D?
In 2024, William Davis McConnell, MD had 3,970 Medicare Part D claims for 289 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is William Davis McConnell, MD's MIPS final score?
The 2023 MIPS final score is 10.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.