Jon Mark Hirshon, M.D.
NPI 1548223837 · Emergency Medicine Physician · Baltimore, MD
Jon Mark Hirshon, M.D. is a Emergency Medicine Physician provider in Baltimore, MD (NPI 1548223837).
Provider details
- NPI number
- 1548223837
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D0044264 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-08
- Last updated
- 2008-02-25
Frequently asked questions
- What is Jon Mark Hirshon's NPI number?
- Jon Mark Hirshon's National Provider Identifier (NPI) is 1548223837, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jon Mark Hirshon's specialty?
- Jon Mark Hirshon is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jon Mark Hirshon located?
- Jon Mark Hirshon's practice location on file with NPPES is 10 S Greene St, Baltimore, MD 21201-1544.
- What is Jon Mark Hirshon's phone number?
- The practice phone number listed in the NPPES registry for Jon Mark Hirshon is (410) 328-7474.
- Is Jon Mark Hirshon's NPI active?
- Yes — Jon Mark Hirshon's NPI (1548223837) is active in the NPPES registry as of the last update on 2008-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.