Leonidez De Guzman, M.D.
Infectious Disease Physician · New Rochelle, NY
Leonidez De Guzman, M.D. is an infectious disease physician with a practice address in New Rochelle, New York, and NPI 1699900340, issued on May 26, 2009. Check the license on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Leonidez De Guzman
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- MD154002 OR
Self-reported in NPPES; status is on the state search - Practice location
- 50 Guion PL Apt 4K, New Rochelle, NY 10801
- Phone
- (914) 318-7428
- Enumerated
- May 26, 2009
- Record last updated
- May 19, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110928000760); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 970 in New York → Look up another NPI →
Verify Leonidez De Guzman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the ProfessionsCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average infectious disease physician in 2024
30 Medicare Part D claims, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin13 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 practice group's MIPS final score for 2023 (Medicare payment program): 88.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Kaiser Foundation Health Plan OF The NorthwestClackamas, OR
- Legacy Clinics LLCPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leonidez De Guzman among 970 infectious disease physician records in New York
Leonidez De Guzman, M.D. is one of 970 infectious disease physician records with a practice address in New York. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 66% of them.
- NPI issued2009 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2002 · median 2002 among the 624 with a school on file
- Record last updated2016 · 63% 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 New York 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 New York
There are 970 infectious disease physician records in New York.
All 970 in New York → Every provider in New Rochelle → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Robert Goldstein, M.D.New Rochelle, NY 108011437307808
- Michele Halpern, MDNew Rochelle, NY 108011043260987
- Ada Huang, M.D.New Rochelle, NY 108011891991816
- Jeffrey Lederman, MDNew Rochelle, NY 108011518926617
- Belinda Ostrowsky, MD, MPHNew Rochelle, NY 108011154309995
- Robin Goldberg, MDBronxville, NY 107081316019003
- Emi Hayashi, MDBronxville, NY 107081780213322
- Jose Bonoan, M.D.Yonkers, NY 107041255312518
Common questions
What is Leonidez De Guzman, M.D.'s NPI number?
Leonidez De Guzman, M.D.'s National Provider Identifier (NPI) is 1699900340, issued on May 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Leonidez De Guzman, M.D. located?
The NPPES record lists a practice address at 50 Guion PL Apt 4K, New Rochelle, NY, 10801. Phone: (914) 318-7428. Providers update this record themselves, so call before visiting.
How can I verify Leonidez De Guzman, M.D.'s license?
Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leonidez De Guzman, M.D. prescribe under Medicare Part D?
In 2024, Leonidez De Guzman, M.D. had 30 Medicare Part D claims; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Leonidez De Guzman, M.D.'s MIPS final score?
The 2023 MIPS final score is 88.7 of 100, reported for the practice group. 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.