Jenaro John Hernandez, D.O.
Internal Medicine Physician · Baltimore, MD
Jenaro John Hernandez, D.O. is an internal medicine physician with a practice address in Baltimore, Maryland, and NPI 1386935724, issued on Apr 19, 2011. Check the license (Maryland H80019, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Jenaro John Hernandez
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- H80019 MD
Self-reported in NPPES; status is on the state search - Practice location
- 900 Caton Ave, Baltimore, MD 21229
- Phone
- (443) 703-3200
- Enumerated
- Apr 19, 2011
- Record last updated
- Nov 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (443) 703-3201
- Medicare enrollment
- Enrolled (PECOS I20150807013114); accepts Medicare assignment
- Medical or professional school
- Rowan University School Of Osteopathic Medicine, 2011
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 900 Caton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jenaro John Hernandez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license H80019Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
7,105 Medicare Part D claims for 694 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 93 claims were for opioids.
Most prescribed
- Atorvastatin Calcium897 claims
- Amlodipine Besylate375 claims
- Lisinopril338 claims
- Losartan Potassium276 claims
- Levothyroxine Sodium237 claims
- Gabapentin232 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
- Kaiser Foundation Health Plan OF The Mid Atlantic States, IncNottingham, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jenaro John Hernandez among 3,904 internal medicine physician records in Maryland
Jenaro John Hernandez, D.O. 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 2011, is newer than 67% of them.
- NPI issued2011 · 67% of these records are older, 31% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2011 · median 2003 among the 2,445 with a school on file
- Record last updated2021 · 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 →
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Common questions
What is Jenaro John Hernandez, D.O.'s NPI number?
Jenaro John Hernandez, D.O.'s National Provider Identifier (NPI) is 1386935724, issued on Apr 19, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Jenaro John Hernandez, D.O. located?
The NPPES record lists a practice address at 900 Caton Ave, Baltimore, MD, 21229. Phone: (443) 703-3200. Providers update this record themselves, so call before visiting.
How can I verify Jenaro John Hernandez, D.O.'s license?
NPPES lists Maryland license number H80019, 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 Jenaro John Hernandez, D.O. prescribe under Medicare Part D?
In 2024, Jenaro John Hernandez, D.O. had 7,105 Medicare Part D claims for 694 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.