Johns Hopkins University
NPI 1598635401 · Geriatric Medicine (Internal Medicine) Physician · Baltimore, MD
Johns Hopkins University is a Geriatric Medicine (Internal Medicine) Physician organization in Baltimore, MD (NPI 1598635401).
Provider details
- NPI number
- 1598635401
- Entity type
- Organization
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Nicholas Giarratano, Director, Provider Enrollment(410) 933-0000
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
Under 1 yr in 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
Other names (DBA / former)
- Doing business as
- Jhu - 5505 Hopkins Bayview Cir - Provider Type: 20-Physician
Registry dates
- Enumerated
- 2025-11-06
- Last updated
- 2026-02-05
- Certified
- 2026-02-05
Frequently asked questions
- What is Johns Hopkins University's NPI number?
- Johns Hopkins University's National Provider Identifier (NPI) is 1598635401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Johns Hopkins University?
- Johns Hopkins University is classified in the NPPES registry as Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Johns Hopkins University located?
- Johns Hopkins University's practice location on file with NPPES is 5505 Hopkins Bayview Cir, Baltimore, MD 21224-6821.
- What is Johns Hopkins University's phone number?
- The practice phone number listed in the NPPES registry for Johns Hopkins University is (410) 550-2300.
- Who is the authorized official for Johns Hopkins University?
- The authorized official listed on Johns Hopkins University's NPPES record is Nicholas Giarratano, Director, Provider Enrollment. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Johns Hopkins University's NPI active?
- Yes — Johns Hopkins University's NPI (1598635401) is active in the NPPES registry as of the last update on 2026-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.