Johnna Mahoney, M.D.
NPI 1366891558 · Neonatal-Perinatal Medicine Physician · Silver Spring, MD
Johnna Mahoney, M.D. is a Neonatal-Perinatal Medicine Physician provider in Silver Spring, MD (NPI 1366891558).
Provider details
- NPI number
- 1366891558
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- D0094107 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
- 2016-06-08
- Last updated
- 2023-07-10
- Certified
- 2023-07-10
Frequently asked questions
- What is Johnna Mahoney's NPI number?
- Johnna Mahoney's National Provider Identifier (NPI) is 1366891558, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Johnna Mahoney's specialty?
- Johnna Mahoney is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Johnna Mahoney located?
- Johnna Mahoney's practice location on file with NPPES is 1500 Forest Glen Rd, Silver Spring, MD 20910-1484.
- What is Johnna Mahoney's phone number?
- The practice phone number listed in the NPPES registry for Johnna Mahoney is (301) 754-7600.
- Is Johnna Mahoney's NPI active?
- Yes — Johnna Mahoney's NPI (1366891558) is active in the NPPES registry as of the last update on 2023-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.