CATHERINE JEAN CHAMBERLAIN M.D.
NPI 1083031199
Family Medicine in Baltimore, MD
About Catherine Jean Chamberlain M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE JEAN CHAMBERLAIN M.D. (NPI 1083031199) is an individual family medicine provider in Baltimore, Maryland, licensed in Maryland (D82835) and active in the NPI registry since March 2014. She is enrolled in Medicare PECOS and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses 2
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
Catherine Jean Chamberlain M.d. 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 Catherine Chamberlain reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21224
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Baltimore Medical System, Inc.
- 243 clinicians in this Medicare group
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 952 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21224 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21224
BALTIMORE, MD 21224
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 Catherine Chamberlain's NPI number?
The NPI number for Catherine Chamberlain is 1083031199. It was assigned to this individual provider in the NPPES registry on March 26, 2014.
Where is Catherine Chamberlain located?
Catherine Chamberlain practices at 3700 Fleet St Ste 200, Baltimore, MD 21224. The listed phone number is (410) 558-4700.
What is Catherine Chamberlain's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Catherine Chamberlain enrolled in Medicare?
Yes. Catherine Chamberlain 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 Catherine Chamberlain's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Chamberlain reassigns Medicare benefits to 2 organizations: Baltimore Medical Systems, Inc. (Baltimore, MD) and Johns Hopkins Community Physicians (Baltimore, MD). 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 Catherine Chamberlain'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 Catherine Chamberlain was last updated on April 3, 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.
# Catherine Jean Chamberlain, M.D. · NPI 1083031199
Family Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since March 26, 2014.
## Identity
- **NPI:** 1083031199 (Entity type: Individual)
- **Enumerated:** March 26, 2014
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** D82835 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 3700 FLEET ST STE 200, Baltimore, MD 21224-4243
- **Phone:** (410) 558-4700 · **Fax:** (410) 522-5070
## 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): Baltimore Medical Systems, Inc. (NPI 1164138152, Baltimore, MD); Johns Hopkins Community Physicians (NPI 1124629837, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** April 3, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1083031199) · Data from the CMS NPPES public registry.