MARIE H TANZER MD
NPI 1043492473
Pediatrics - Pediatric Nephrology in Portland, ME
About Marie H Tanzer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIE H TANZER MD (NPI 1043492473) is an individual pediatric nephrology provider in Portland, Maine, licensed in Maine (MD19259) and active in the NPI registry since November 2007. She is enrolled in Medicare PECOS and is a graduate of Northwestern University Feinberg Medical School (2005).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 2
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
Marie H Tanzer 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
2Medicare enrollment records show Marie Tanzer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Portland, ME 04102
- Reassigned Medicare billing, Maine enrollment
- 188 clinicians in this Medicare group
Portland, ME 04102
- Reassigned Medicare billing, Maine enrollment
- 3,140 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.
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.
Referred Medical Equipment & Supplies CMS DME claims 4
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
PORTLAND, ME 04102
PORTLAND, ME 04102
PORTLAND, ME 04102
PORTLAND, ME 04102
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 Marie Tanzer's NPI number?
The NPI number for Marie Tanzer is 1043492473. It was assigned to this individual provider in the NPPES registry on November 27, 2007.
Where is Marie Tanzer located?
Marie Tanzer practices at 887 Congress St Suite 320, Portland, ME 04102. The listed phone number is (207) 662-5522.
What is Marie Tanzer's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Nephrology, with taxonomy code 2080P0210X.
Is Marie Tanzer enrolled in Medicare?
Yes. Marie Tanzer 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 Marie Tanzer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marie Tanzer reassigns Medicare benefits to 2 organizations: Maine Medical Partners (Portland, ME) and Mainehealth (Portland, ME). 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 Marie Tanzer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marie Tanzer accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Marie Tanzer 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 Marie Tanzer was last updated on October 30, 2012. 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.
# Marie H Tanzer, MD · NPI 1043492473
Pediatric Nephrology physician in Portland, Maine. Individual provider, active in the CMS NPPES registry since November 27, 2007.
## Identity
- **NPI:** 1043492473 (Entity type: Individual)
- **Enumerated:** November 27, 2007
- **Primary specialty:** Pediatrics - Pediatric Nephrology · taxonomy 2080P0210X
- **State license:** MD19259 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 887 CONGRESS ST, SUITE 320, Portland, ME 04102
- **Phone:** (207) 662-5522 · **Fax:** (207) 662-5527
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Maine Medical Partners (NPI 1134305386, Portland, ME); Mainehealth (NPI 1063726891, Portland, ME) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 2005
## Record status
- **NPPES last updated:** October 30, 2012
- **Other identifiers:** Medicare PIN 002752902 (ME); Medicare PIN 002752901 (ME)
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Source: [NPI Profile](https://npiprofile.com/npi/1043492473) · Data from the CMS NPPES public registry.