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Edit this profileAt a glance
- 827 Linden Ave, Baltimore, MD 21201
About John Hagan
John Hagan, CRNP is a nurse practitioner based in Baltimore, MD. According to Medicare claims data, the services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes. The provider's National Provider Identifier (NPI) is 1740489970.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (410) 328-8141
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
827 LINDEN AVE
Baltimore, MD 21201
Procedures Most Often Billed to Medicare
534 services · 18 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
534 | More than most peers in Nurse Practitioner |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other nurse practitioners in Baltimore 8
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does John Hagan specialize in?
John Hagan is a nurse practitioner in Baltimore, MD. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is John Hagan located?
John Hagan is listed at 827 Linden Ave, Baltimore, MD 21201. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is John Hagan's phone number?
The number on file is (410) 328-8141. Contact the office directly to confirm availability and scheduling.
NPI registry
What is John Hagan's NPI number?
John Hagan's National Provider Identifier is 1740489970. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did John Hagan train?
John Hagan attended Other, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has John Hagan been practicing?
John Hagan has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What does John Hagan do most often?
According to Medicare billing data, John Hagan the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has John Hagan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John Hagan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.