ALLAN CHARLES GELBER M.D.
NPI 1194762484
Internal Medicine - Rheumatology in Baltimore, MD
About Allan Charles Gelber M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALLAN CHARLES GELBER M.D. (NPI 1194762484) is an individual rheumatology provider in Baltimore, Maryland, licensed in Maryland (D46072) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Johns Hopkins University School Of Medicine (1989).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Allan Charles Gelber M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Allan Gelber reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 338 clinicians in this Medicare group
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 5
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Johns Hopkins Hospital, The
Acute Care Hospitals · Baltimore, MDJohns Hopkins Bayview Medical Center
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21287 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21287
BALTIMORE, MD 21287
BALTIMORE, MD 21287
BALTIMORE, MD 21287
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 Allan Gelber's NPI number?
The NPI number for Allan Gelber is 1194762484. It was assigned to this individual provider in the NPPES registry on June 2, 2006.
Where is Allan Gelber located?
Allan Gelber practices at 600 N Wolfe St, Baltimore, MD 21287. The listed phone number is (410) 955-3052.
What is Allan Gelber's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Allan Gelber enrolled in Medicare?
Yes. Allan Gelber is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Allan Gelber's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allan Gelber reassigns Medicare benefits to 2 organizations: Johns Hopkins University (Baltimore, MD) and Johns Hopkins University (Baltimore, MD). Each 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 Allan Gelber's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Allan Gelber affiliated with any hospitals?
According to CMS data, Allan Gelber is affiliated with Johns Hopkins Hospital, The and Johns Hopkins Bayview Medical Center.
When was this NPI record last updated?
The NPPES record for Allan Gelber was last updated on February 6, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.
# Allan Charles Gelber, M.D. · NPI 1194762484
Rheumatology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since June 2, 2006.
## Identity
- **NPI:** 1194762484 (Entity type: Individual)
- **Enumerated:** June 2, 2006
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** D46072 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 N WOLFE ST, Baltimore, MD 21287-0005
- **Phone:** (410) 955-3052
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Johns Hopkins University (NPI 1023018413, Baltimore, MD); Johns Hopkins University (NPI 1902332133, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Johns Hopkins University School Of Medicine, class of 1989
## Record status
- **NPPES last updated:** February 6, 2013
- **Other identifiers:** Medicare UPIN F84918 (MD); Medicaid 597181100 (MD); Medicare PIN KR62MF83 (MD)
---
Source: [NPI Profile](https://npiprofile.com/npi/1194762484) · Data from the CMS NPPES public registry.