Quick answers
- Which hospitals does Heidi A. Karon work at?
- Medicare's official clinician data lists Heidi A. Karon at 1 hospital: The Johns Hopkins Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Heidi A. Karon see patients?
- Medicare's clinician data lists 2 practice locations, including Columbia, MD. Call before your visit to confirm the address.
- What is Heidi A. Karon's specialty?
- Medicare lists Endocrinology as the primary specialty, and also Internal Medicine.
- Does Heidi A. Karon accept Medicare assignment?
- Yes. Medicare's clinician data says Heidi A. Karon accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Heidi A. Karon offer telehealth?
- Medicare's clinician data says Heidi A. Karon offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Heidi A. Karon?
- (301) 953-2080, as listed in official Medicare / NPI Registry data.
- What is Heidi A. Karon's NPI number?
- 1144361155. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Heidi A. Karon works
Medicare's Facility Affiliation Data lists Heidi A. Karon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · CCN 210009
Practice locations
Addresses where Heidi A. Karon is enrolled with Medicare (CMS data updated 2026-10-02).
- 10710 Charter Dr, Suite 410Columbia, MD 21044
- 5500 Knoll N Dr, Suite 510Columbia, MD 21045 (301) 953‑2080
Group practices
Medicare enrollment lists Heidi A. Karon as a member of this group (CMS data updated 2026-10-02).
- Maryland Endocrine, P.A.10 clinicians in the group
Specialties
- Endocrinologyprimary
- Internal Medicinealso
Other endocrinologists in Columbia
Clinicians with the same Medicare primary specialty in Columbia, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Maryland School Of Medicine |
| Graduation year | 2002 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1144361155 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians