ZACHARY P MUELLER DO
NPI 1801232608
Hospitalist in Portland, ME
About Zachary P Mueller Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ZACHARY P MUELLER DO (NPI 1801232608) is an individual hospitalist provider in Portland, Maine, licensed in Maine (DO2636) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS, is affiliated with Maine Medical Center, and maintains 5 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 5
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
Zachary P Mueller Do 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 Zachary Mueller reassigns Medicare billing to 5 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
- Also billed through NPI 1841397932 (Maine)
- 3,140 clinicians in this Medicare group
Lewiston, ME 04240
- Reassigned Medicare billing, Maine enrollment
- 920 clinicians in this Medicare group
Bridgton, ME 04009
- Reassigned Medicare billing, Maine enrollment
- 563 clinicians in this Medicare group
Dixfield, ME 04224
- Reassigned Medicare billing, Maine enrollment
- 77 clinicians in this Medicare group
Rumford, ME 04276
- Reassigned Medicare billing, Maine enrollment
- 544 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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Maine Medical Center
Acute Care Hospitals · Portland, MECentral Maine Medical Center
Acute Care Hospitals · Lewiston, MERumford Hospital
Critical Access Hospitals · Rumford, MEBridgton Hospital
Critical Access Hospitals · Bridgton, MEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04102 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.
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 Zachary Mueller's NPI number?
The NPI number for Zachary Mueller is 1801232608. It was assigned to this individual provider in the NPPES registry on May 20, 2013.
Where is Zachary Mueller located?
Zachary Mueller practices at 22 Bramhall St, Portland, ME 04102. The listed phone number is (207) 662-4618.
What is Zachary Mueller's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Zachary Mueller enrolled in Medicare?
Yes. Zachary Mueller 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 Zachary Mueller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Zachary Mueller reassigns Medicare benefits to 5 organizations: Mainehealth (Portland, ME), Central Maine Medical Center (Lewiston, ME), Bridgton Hospital (Bridgton, ME), Rumford Community Family Health Center, Inc. (Dixfield, ME) and Rumford Hospital (Rumford, 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 Zachary Mueller's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Zachary Mueller accept?
Health plans from Anthem Blue Cross and Blue Shield list Zachary Mueller 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 Zachary Mueller affiliated with any hospitals?
According to CMS data, Zachary Mueller is affiliated with Maine Medical Center, Central Maine Medical Center, Rumford Hospital and Bridgton Hospital.
When was this NPI record last updated?
The NPPES record for Zachary Mueller was last updated on March 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Zachary P Mueller, DO · NPI 1801232608
Hospitalist physician in Portland, Maine. Individual provider, active in the CMS NPPES registry since May 20, 2013.
## Identity
- **NPI:** 1801232608 (Entity type: Individual)
- **Enumerated:** May 20, 2013
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** DO2636 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 22 BRAMHALL ST, Portland, ME 04102-3134
- **Phone:** (207) 662-4618 · **Fax:** (207) 662-6254
## 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): Mainehealth (NPI 1073701157, Portland, ME); Central Maine Medical Center (NPI 1689653487, Lewiston, ME); Bridgton Hospital (NPI 1154370153, Bridgton, ME); Rumford Community Family Health Center, Inc. (NPI 1902841083, Dixfield, ME); Rumford Hospital (NPI 1205991122, Rumford, ME) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of New England, College Of Osteo Medicine, class of 2013
## Record status
- **NPPES last updated:** March 30, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1801232608) · Data from the CMS NPPES public registry.