DR. MICHAEL HARRIS BLUME M.D.
NPI 1285602813
Internal Medicine - Gastroenterology in Baltimore, MD
About Dr. Michael Harris Blume M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL HARRIS BLUME M.D. (NPI 1285602813) is an individual gastroenterology provider in Baltimore, Maryland, licensed in Virginia (0101272036) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and maintains 5 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 5
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Michael Harris Blume M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
8Medicare enrollment records show Michael Blume reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- 614 clinicians in this Medicare group
Pasadena, MD 21122
- Reassigned Medicare billing, Maryland enrollment
- 794 clinicians in this Medicare group
Bel Air, MD 21014
- Reassigned Medicare billing, Maryland enrollment
- 158 clinicians in this Medicare group
Mount Airy, MD 21771
- Reassigned Medicare billing, Maryland enrollment
- 245 clinicians in this Medicare group
Fairfax, VA 22031
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 2,618 clinicians in this Medicare group
Charlottesville, VA 22911
- Reassigned Medicare billing, Virginia enrollment
- 307 clinicians in this Medicare group
Rockingham, VA 22801
- Reassigned Medicare billing, Virginia enrollment
- 369 clinicians in this Medicare group
Norfolk, VA 23502
- Reassigned Medicare billing, Virginia enrollment
- 1,901 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 7
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21230 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 Michael Blume's NPI number?
The NPI number for Michael Blume is 1285602813. It was assigned to this individual provider in the NPPES registry on March 9, 2006.
Where is Michael Blume located?
Michael Blume practices at 801 Key Hwy Unit 241, Baltimore, MD 21230. The listed phone number is (443) 759-5483.
What is Michael Blume's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Michael Blume enrolled in Medicare?
Yes. Michael Blume is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Michael Blume's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Blume reassigns Medicare benefits to 8 organizations: University Of Maryland Physicians PA (Baltimore, MD), Luminis Health Medical Group, LLC (Pasadena, MD), Upper Chesapeake Medical Services, Inc (Bel Air, MD), Frederick Health Medical Group LLC (Mount Airy, MD), Inova Health Care Services (Fairfax, VA) and 3 more organizations, listed in the Medicare section above. 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 Michael Blume's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Blume accept?
Health plans from Oscar Health list Michael Blume as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Michael Blume was last updated on August 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Dr. Michael Harris Blume, M.D. · NPI 1285602813
Gastroenterology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since March 9, 2006.
## Identity
- **NPI:** 1285602813 (Entity type: Individual)
- **Enumerated:** March 9, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 0101272036 (Virginia)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 801 KEY HWY UNIT 241, Baltimore, MD 21230-3984
- **Phone:** (443) 759-5483 · **Fax:** (410) 510-1418
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): University Of Maryland Physicians PA (NPI 1144270687, Baltimore, MD); Luminis Health Medical Group, LLC (NPI 1063837490, Pasadena, MD); Upper Chesapeake Medical Services, Inc (NPI 1497801419, Bel Air, MD); Frederick Health Medical Group LLC (NPI 1114771862, Mount Airy, MD); Inova Health Care Services (NPI 1669511051, Fairfax, VA); and 3 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 1, 2025
- **Other identifiers:** Medicaid 268081500 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1285602813) · Data from the CMS NPPES public registry.