NPPES file of Aug 9, 2026

Yvette M. Lopez-Warren, M.D.

Family Medicine Physician · Frederick, MD

Yvette M. Lopez-Warren, M.D. is a family medicine physician with a practice address in Frederick, Maryland, and NPI 1164492419, issued on Jan 26, 2006. Check the license (Maryland D0058726, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164492419
Name
Yvette M. Lopez-Warren
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
D0058726 MD
Self-reported in NPPES; status is on the state search
Practice location
1564 Opossumtown Pike, Frederick, MD 21702
Phone
(301) 663-3137
Enumerated
Jan 26, 2006
Record last updated
Jul 30, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(301) 695-6939
Medicaid ID
403698100 MD
Medicare enrollment
Enrolled (PECOS I20040325001196); accepts Medicare assignment
Medical or professional school
Temple University School Of Medicine, 1993
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1564 Opossumtown Pike

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Eugene Casagrande, MDFamily Medicine Physician1407826886
  2. Kimanh Le, MDFamily Medicine Physician1902877020
  3. Jason Lowery, MDFamily Medicine Physician1700049525
  4. Hope McIntyre, MDFamily Medicine Physician1538139878

Verify Yvette M. Lopez-Warren in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of Physicians
    Search for license D0058726
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Maryland license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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57% more Medicare Part D claims than the average family medicine physician in 2024

5,562 Medicare Part D claims for 378 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 102 claims were for opioids.

  1. Yvette Lopez-Warren5,562
  2. Specialty average3,544

Most prescribed

  1. Levothyroxine Sodium271 claims
  2. Atorvastatin Calcium221 claims
  3. Lisinopril209 claims
  4. Amlodipine Besylate156 claims
  5. Metformin Hcl136 claims
  6. Rosuvastatin Calcium128 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

  1. Frederick Health Medical Group LLCMyersville, MD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Yvette M. Lopez-Warren among 1,912 family medicine physician records in Maryland

Yvette M. Lopez-Warren, M.D. is one of 1,912 family medicine physician records with a practice address in Maryland. 73% 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 13% of them.

  • NPI issued2006 · 13% of these records are older, 54% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1993 · median 2004 among the 1,141 with a school on file
  • Record last updated2019 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

65 family medicine physician records list a practice address in Frederick

They are 65 of the 3,981 NPPES records with a practice address in Frederick, and 1,912 family medicine physician records in Maryland.

The 8 family medicine physician records with the nearest ZIP codes

  1. Joseph Ashwal, M.D.Frederick, MD 217021508840026
  2. Debra Bavari, M.D.Frederick, MD 217021184600876
  3. Barbara Brookmyer, M.D.Frederick, MD 217021548259203
  4. Eugene Casagrande, MDFrederick, MD 217021407826886
  5. Gerard Delgrippo, M.D.Frederick, MD 217021447233234
  6. Mary-Elizabeth Delmonte, MDFort Detrick, MD 217021952391377
  7. Edward Fisher, M.D.Frederick, MD 217021639153117
  8. Rebecca Herman-Smith, D.O.Frederick, MD 217021447241997

Common questions

What is Yvette M. Lopez-Warren, M.D.'s NPI number?

Yvette M. Lopez-Warren, M.D.'s National Provider Identifier (NPI) is 1164492419, issued on Jan 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Yvette M. Lopez-Warren, M.D. located?

The NPPES record lists a practice address at 1564 Opossumtown Pike, Frederick, MD, 21702. Phone: (301) 663-3137. Providers update this record themselves, so call before visiting.

How can I verify Yvette M. Lopez-Warren, M.D.'s license?

NPPES lists Maryland license number D0058726, 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 Yvette M. Lopez-Warren, M.D. prescribe under Medicare Part D?

In 2024, Yvette M. Lopez-Warren, M.D. had 5,562 Medicare Part D claims for 378 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.