Johns Hopkins University
NPI 1598574212 · Nephrology Physician · Baltimore, MD
Johns Hopkins University is a Nephrology Physician organization in Baltimore, MD (NPI 1598574212).
Provider details
- NPI number
- 1598574212
- Entity type
- Organization
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Nicholas Giarratano, A.o.(410) 933-0000
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Anesthesiology Physician207L00000X
Allopathic & Osteopathic Physicians
- Emergency Medicine Physician207P00000X
Allopathic & Osteopathic Physicians
- Internal Medicine Physician207R00000X
Allopathic & Osteopathic Physicians
- Pediatrics Physician208000000X
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
1 yr 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
Other names (DBA / former)
- Doing business as
- Jhu -- 4940 Eastern Avenue -- Physician - Carelon
Registry dates
- Enumerated
- 2025-01-07
- Last updated
- 2025-05-08
- Certified
- 2025-05-08
Frequently asked questions
- What is Johns Hopkins University's NPI number?
- Johns Hopkins University's National Provider Identifier (NPI) is 1598574212, 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 Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Johns Hopkins University located?
- Johns Hopkins University's practice location on file with NPPES is 4940 Eastern Ave, Baltimore, MD 21224-2735.
- What is Johns Hopkins University's phone number?
- The practice phone number listed in the NPPES registry for Johns Hopkins University is (410) 550-0100.
- Who is the authorized official for Johns Hopkins University?
- The authorized official listed on Johns Hopkins University's NPPES record is Nicholas Giarratano, A.o.. 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 (1598574212) is active in the NPPES registry as of the last update on 2025-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.