DR. MARY ANN LANGE BISHOP MD
NPI 1609929801
Internal Medicine - Nephrology in Gaithersburg, MD
About Dr. Mary Ann Lange Bishop Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARY ANN LANGE BISHOP MD (NPI 1609929801) is an individual nephrology provider in Gaithersburg, Maryland, licensed in Maryland (D0037504) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS, is affiliated with Western Maryland Regional Medical Center, and is a graduate of University Of Michigan Medical School (1980).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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. Mary Ann Lange Bishop Md 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 Mary Ann Bishop reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cumberland, MD 21502
- Reassigned Medicare billing, Maryland enrollment
- 318 clinicians in this Medicare group
Cumberland, MD 21502
- Reassigned Medicare billing, Maryland enrollment
- 210 clinicians in this Medicare group
Rural Retreat, VA 24368
- Reassigned Medicare billing, Virginia enrollment
- 337 clinicians in this Medicare group
Alcoa, TN 37701
- Reassigned Medicare billing, Tennessee enrollment
- 295 clinicians in this Medicare group
Cookeville, TN 38501
- Reassigned Medicare billing, Tennessee enrollment
- 124 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Western Maryland Regional Medical Center
Acute Care Hospitals · Cumberland, MDBlount Memorial Hospital
Acute Care Hospitals · Maryville, TNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20878 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GAITHERSBURG, MD 20878
GAITHERSBURG, MD 20878
GAITHERSBURG, MD 20878
GAITHERSBURG, MD 20878
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 Mary Ann Bishop's NPI number?
The NPI number for Mary Ann Bishop is 1609929801. It was assigned to this individual provider in the NPPES registry on January 19, 2007.
Where is Mary Ann Bishop located?
Mary Ann Bishop practices at 7 Metropolitan Ct Ste 1, Gaithersburg, MD 20878. The listed phone number is (240) 773-0300.
What is Mary Ann Bishop's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Mary Ann Bishop enrolled in Medicare?
Yes. Mary Ann Bishop 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 Mary Ann Bishop's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Ann Bishop reassigns Medicare benefits to 5 organizations: Upmc Western Maryland Health Services, LLC (Cumberland, MD), Upmc Western Maryland Corporation (Cumberland, MD), Blue Ridge Medical Management Corporation (Rural Retreat, VA), Blount Memorial Physician Group, Inc (Alcoa, TN) and Cookeville Regional Medical Group, Inc (Cookeville, TN). 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 Mary Ann Bishop's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Ann Bishop accept?
Health plans from CareSource and Cigna Healthcare list Mary Ann Bishop 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.
Is Mary Ann Bishop affiliated with any hospitals?
According to CMS data, Mary Ann Bishop is affiliated with Western Maryland Regional Medical Center and Blount Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Mary Ann Bishop was last updated on August 21, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. Mary Ann Lange Bishop, MD · NPI 1609929801
Nephrology physician in Gaithersburg, Maryland. Individual provider, active in the CMS NPPES registry since January 19, 2007.
## Identity
- **NPI:** 1609929801 (Entity type: Individual)
- **Enumerated:** January 19, 2007
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** D0037504 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 7 METROPOLITAN CT STE 1, Gaithersburg, MD 20878-4016
- **Phone:** (240) 773-0300
## 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): Upmc Western Maryland Health Services, LLC (NPI 1376302729, Cumberland, MD); Upmc Western Maryland Corporation (NPI 1285779884, Cumberland, MD); Blue Ridge Medical Management Corporation (NPI 1447543996, Rural Retreat, VA); Blount Memorial Physician Group, Inc (NPI 1699710194, Alcoa, TN); Cookeville Regional Medical Group, Inc (NPI 1649202102, Cookeville, TN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 1980
## Record status
- **NPPES last updated:** August 21, 2020
---
Source: [NPI Profile](https://npiprofile.com/npi/1609929801) · Data from the CMS NPPES public registry.