DR. CHRISTINA HOUSTON CLARK MD
NPI 1689251340
Hospitalist in Portland, ME
About Dr. Christina Houston Clark Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTINA HOUSTON CLARK MD (NPI 1689251340) is an individual hospitalist provider in Portland, Maine, licensed in Maine (MD28024) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (2021).
NPPES Registry Identity
Specialties & Licenses 3
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. Christina Houston Clark 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 Reassignment
Medicare enrollment records show Christina Clark reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Baltimore, MD 21239
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 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 3
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 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.
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 Christina Clark's NPI number?
The NPI number for Christina Clark is 1689251340. It was assigned to this individual provider in the NPPES registry on March 26, 2021.
Where is Christina Clark located?
Christina Clark practices at 22 Bramhall St, Portland, ME 04102. The listed phone number is (207) 662-0111.
What is Christina Clark's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Christina Clark enrolled in Medicare?
Yes. Christina Clark 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 organization bills Medicare for Christina Clark's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christina Clark reassigns Medicare benefits to Medstar Medical Group II LLC (Baltimore, MD). The 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 Christina Clark's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Christina Clark was last updated on September 4, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Christina Houston Clark, MD · NPI 1689251340
Hospitalist physician in Portland, Maine. Individual provider, active in the CMS NPPES registry since March 26, 2021.
## Identity
- **NPI:** 1689251340 (Entity type: Individual)
- **Enumerated:** March 26, 2021
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** MD28024 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 22 BRAMHALL ST, Portland, ME 04102-3175
- **Phone:** (207) 662-0111
## 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:** Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** George Washington University School Of Medicine, class of 2021
## Record status
- **NPPES last updated:** September 4, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1689251340) · Data from the CMS NPPES public registry.