John Ian McNeil, M.D.
Infectious Disease Physician · Silver Spring, MD
John Ian McNeil, M.D. is an infectious disease physician with a practice address in Silver Spring, Maryland, and NPI 1407828254, issued on Feb 6, 2006. Check the license (Maryland D0046584, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- John Ian McNeil
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- D0046584 MD
Self-reported in NPPES; status is on the state search - Practice location
- 12126 Heritage Park Cir, Silver Spring, MD 20906
- Phone
- (301) 460-6664
- Enumerated
- Feb 6, 2006
- Record last updated
- Sep 30, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (301) 460-7867
- Medicare enrollment
- Enrolled (PECOS I20050411000162); accepts Medicare assignment
- Medical or professional school
- Howard University College Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 410 in Maryland → Look up another NPI →
Also registered at 12126 Heritage Park Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shruthi Bellapu, M.D.Infectious Disease Physician1508009200
- Ramani Reddy, MDInfectious Disease Physician1497749592
Verify John Ian McNeil in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0046584Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.0 times the Medicare Part D claims of the average infectious disease physician in 2024
3,454 Medicare Part D claims for 470 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 48 claims were for opioids.
Most prescribed
- Amlodipine Besylate139 claims
- Biktarvy134 claims
- Losartan Potassium124 claims
- Atorvastatin Calcium123 claims
- Levothyroxine Sodium110 claims
- Metformin Hcl99 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.
Industry payments in 2024: $374.65
26 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 3,895 providers of this specialty with any payment received $4,362.19 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.
Bills Medicare through one group practice
- Maximed Associates Inc.Silver Spring, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Ian McNeil among 410 infectious disease physician records in Maryland
John Ian McNeil, M.D. is one of 410 infectious disease physician records with a practice address in Maryland. 59% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileYes · 49% of these records are
- Graduated1989 · median 2002 among the 202 with a school on file
- Record last updated2011 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Maryland
There are 410 infectious disease physician records in Maryland.
All 410 in Maryland → Every provider in Silver Spring → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Shruthi Bellapu, M.D.Silver Spring, MD 209061508009200
- Ramani Reddy, MDSilver Spring, MD 209061497749592
- Elias Mamo, M.D.Silver Spring, MD 209041881800332
- Barbara Matthews, MD, MPHSilver Spring, MD 209041225523376
- Gopal Reddy, M.D.Silver Spring, MD 209041588758874
- Kristen Bauer, MDSilver Spring, MD 209101861558546
- Sameer Ismailjee, M.D.Silver Spring, MD 209101669403341
- Michael Koren, M.D.Silver Spring, MD 209101881914802
Common questions
What is John Ian McNeil, M.D.'s NPI number?
John Ian McNeil, M.D.'s National Provider Identifier (NPI) is 1407828254, issued on Feb 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Ian McNeil, M.D. located?
The NPPES record lists a practice address at 12126 Heritage Park Cir, Silver Spring, MD, 20906. Phone: (301) 460-6664. Providers update this record themselves, so call before visiting.
How can I verify John Ian McNeil, M.D.'s license?
NPPES lists Maryland license number D0046584, 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 John Ian McNeil, M.D. prescribe under Medicare Part D?
In 2024, John Ian McNeil, M.D. had 3,454 Medicare Part D claims for 470 beneficiaries; the average among infectious disease physician prescribers was 689. 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.