JOHNS HOPKINS UNIVERSITY
NPI 1306810619
Clinical Medical Laboratory in Baltimore, MD
About Johns Hopkins University NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHNS HOPKINS UNIVERSITY (NPI 1306810619), doing business as Jhu - Daci Allergy Lab, is a healthcare organization registered as a clinical medical laboratory in Baltimore, Maryland and active in the NPI registry since February 2006. The organization maintains a secondary practice location in Baltimore and lists Nicholas Giarratano, Pes, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Johns Hopkins University is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date 2
Next revalidation due by December 31, 2026
This provider holds 2 Medicare enrollments with upcoming revalidation dates. Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
4,467Medicare enrollment records show 4,467 clinicians reassign Medicare billing to Johns Hopkins University, which bills Medicare for the services they deliver. Of these, 13 practice at this address and 3,070 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 74
Nearest to this location (20)
See all 4,467Baltimore, MD 21224
Baltimore, MD 21287
Baltimore, MD 21224
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Johns Hopkins University's NPI number?
The NPI number for Johns Hopkins University is 1306810619. It was assigned to this organization in the NPPES registry on February 14, 2006. The provider is doing business as Jhu - Daci Allergy Lab.
Where is Johns Hopkins University located?
Johns Hopkins University is located at 5501 Hopkins Bayview Cir Room 1a20, Baltimore, MD 21224. The listed phone number is (410) 550-3362.
What is Johns Hopkins University's specialty?
The primary specialty registered for this NPI is Clinical Medical Laboratory with taxonomy code 291U00000X.
Is Johns Hopkins University enrolled in Medicare?
Yes. Johns Hopkins University is registered in the Medicare PECOS enrollment system.
When is Johns Hopkins University's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), Johns Hopkins University holds 2 Medicare enrollments with upcoming revalidation dates. The next is due by December 31, 2026 (Non-DME Part B, Maryland, Independent Clinical Laboratory). Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Johns Hopkins University?
According to the CMS Revalidation Reassignment List (October 2026 release), 4,467 clinicians in 74 Medicare specialties reassign their Medicare billing to Johns Hopkins University. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (534), Anesthesiology (309) and Certified Registered Nurse Anesthetist (CRNA) (299). Of these, 13 practice at this address and 3,070 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Johns Hopkins University was last updated on March 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Johns Hopkins University · NPI 1306810619
Clinical Medical Laboratory organization in Baltimore, Maryland. Organization record, active in the CMS NPPES registry since February 14, 2006.
## Identity
- **NPI:** 1306810619 (Entity type: Organization)
- **Enumerated:** February 14, 2006
- **Primary specialty:** Clinical Medical Laboratory · taxonomy 291U00000X
- **Also known as:** JHU - DACI ALLERGY LAB (Doing Business As)
- **Organization subpart:** Yes (part of Johns Hopkins University)
- **Authorized official:** Nicholas Giarratano, PES
## Practice location
- **Address:** 5501 HOPKINS BAYVIEW CIR, ROOM 1A20, Baltimore, MD 21224-6821
- **Phone:** (410) 550-3362
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** December 31, 2026 (Non-DME Part B, Maryland, Independent Clinical Laboratory), next of 2 enrollments with upcoming dates · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 4,467 clinicians in 74 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (534), Anesthesiology (309), Certified Registered Nurse Anesthetist (CRNA) (299); 13 practice at this address and 3,070 within 10 miles; [full list](https://npiprofile.com/npi/1306810619/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 18, 2026
- **Other identifiers:** Medicaid 402888100 (MD); Other 21D0649868 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1306810619) · Data from the CMS NPPES public registry.