DR. RONALD BRUCE REISLER M.D.
NPI 1598712689
Internal Medicine - Infectious Disease in Baltimore, MD
About Dr. Ronald Bruce Reisler M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RONALD BRUCE REISLER M.D. (NPI 1598712689) is an individual infectious disease provider in Baltimore, Maryland, licensed in Maryland (D55656) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Northwest Hospital Center, and is a graduate of University Of Chicago, Pritzker School Of Medicine (1993).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 6
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Ronald Bruce Reisler M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show Ronald Reisler reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21239
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
Randallstown, MD 21133
- Reassigned Medicare billing, Maryland enrollment
- 194 clinicians in this Medicare group
Randallstown, MD 21133
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Emergency Medicine Associates P.A., P.C.
- 729 clinicians in this Medicare group
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1891797148 (Maryland)
- 861 clinicians in this Medicare group
Walkersville, MD 21793
- Reassigned Medicare billing, Maryland enrollment
- 270 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
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwest Hospital Center
Acute Care Hospitals · Randallstown, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21201 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.
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 Ronald Reisler's NPI number?
The NPI number for Ronald Reisler is 1598712689. It was assigned to this individual provider in the NPPES registry on May 27, 2006.
Where is Ronald Reisler located?
Ronald Reisler practices at 1734 Maryland Ave., Baltimore, MD 21201. The listed phone number is (410) 467-6040.
What is Ronald Reisler's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Ronald Reisler enrolled in Medicare?
Yes. Ronald Reisler is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ronald Reisler's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ronald Reisler reassigns Medicare benefits to 5 organizations: Medstar Medical Group II LLC (Baltimore, MD), Northwest Hospital Center, Inc (Randallstown, MD), Emergency Medicine Associates PA PC (Randallstown, MD), Mgmc LLC (Washington, DC) and Hospitalist Medicine Physicians Of Maryland PC (Walkersville, 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 Ronald Reisler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ronald Reisler affiliated with any hospitals?
According to CMS data, Ronald Reisler is affiliated with Northwest Hospital Center.
When was this NPI record last updated?
The NPPES record for Ronald Reisler was last updated on November 4, 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.
# Dr. Ronald Bruce Reisler, M.D. · NPI 1598712689
Infectious Disease physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since May 27, 2006.
## Identity
- **NPI:** 1598712689 (Entity type: Individual)
- **Enumerated:** May 27, 2006
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** D55656 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 1734 MARYLAND AVE., Baltimore, MD 21201
- **Phone:** (410) 467-6040 · **Fax:** (443) 743-2866
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD); Northwest Hospital Center, Inc (NPI 1982708228, Randallstown, MD); Emergency Medicine Associates PA PC (NPI 1043175375, Randallstown, MD); Mgmc LLC (NPI 1316949654, Washington, DC); Hospitalist Medicine Physicians Of Maryland PC (NPI 1932907771, Walkersville, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Chicago, Pritzker School Of Medicine, class of 1993
## Record status
- **NPPES last updated:** November 4, 2013
- **Other identifiers:** Medicaid 100007100 (MD); Medicaid 135700361 (MD); Other 609430-03 & 04 (MD); and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1598712689) · Data from the CMS NPPES public registry.