DR. JOSEPH EMMANUEL MCCLAIN M.D.
NPI 1194968297
Internal Medicine in Gaithersburg, MD
About Dr. Joseph Emmanuel Mcclain M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOSEPH EMMANUEL MCCLAIN M.D. (NPI 1194968297) is an individual internal medicine provider in Gaithersburg, Maryland, licensed in Illinois (036128625) and active in the NPI registry since April 2009. He is enrolled in Medicare PECOS, is affiliated with Holy Cross Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 1
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. Joseph Emmanuel Mcclain 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 Joseph Mcclain reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Gaithersburg, MD 20879
- Reassigned Medicare billing, District of Columbia enrollment
- 2,492 clinicians in this Medicare group
Washington, DC 20037
- Reassigned Medicare billing, District of Columbia enrollment
- 1,275 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.
Holy Cross Hospital
Acute Care Hospitals · Silver Spring, MDSuburban Hospital
Acute Care Hospitals · Bethesda, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20879 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.
GAITHERSBURG, MD 20879
GAITHERSBURG, MD 20879
GAITHERSBURG, MD 20879
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 Joseph Mcclain's NPI number?
The NPI number for Joseph Mcclain is 1194968297. It was assigned to this individual provider in the NPPES registry on April 20, 2009.
Where is Joseph Mcclain located?
Joseph Mcclain practices at 655 Watkins Mill Rd, Gaithersburg, MD 20879. The listed phone number is (301) 848-8790.
What is Joseph Mcclain's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Joseph Mcclain enrolled in Medicare?
Yes. Joseph Mcclain 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 Joseph Mcclain's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Mcclain reassigns Medicare benefits to 2 organizations: Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Gaithersburg, MD) and Medical Faculty Associates, Inc (Washington, DC). 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 Joseph Mcclain's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Joseph Mcclain affiliated with any hospitals?
According to CMS data, Joseph Mcclain is affiliated with Holy Cross Hospital and Suburban Hospital.
When was this NPI record last updated?
The NPPES record for Joseph Mcclain was last updated on June 1, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Joseph Emmanuel Mcclain, M.D. · NPI 1194968297
Internal Medicine physician in Gaithersburg, Maryland. Individual provider, active in the CMS NPPES registry since April 20, 2009.
## Identity
- **NPI:** 1194968297 (Entity type: Individual)
- **Enumerated:** April 20, 2009
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 036128625 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 655 WATKINS MILL RD, Gaithersburg, MD 20879-3301
- **Phone:** (301) 848-8790
## 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): Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1831471713, Gaithersburg, MD); Medical Faculty Associates, Inc (NPI 1417990581, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Eastern Virginia Medical School, class of 2009
## Record status
- **NPPES last updated:** June 1, 2021
- **Other identifiers:** Medicaid 3810023666 (WV)
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Source: [NPI Profile](https://npiprofile.com/npi/1194968297) · Data from the CMS NPPES public registry.