MR. TIMOTHY EDWARD SOMMERVILLE MD
NPI 1477829943
Internal Medicine in Baltimore, MD
About Mr. Timothy Edward Sommerville Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. TIMOTHY EDWARD SOMMERVILLE MD (NPI 1477829943) is an individual internal medicine provider in Baltimore, Maryland, licensed in Maryland (D0087358) and active in the NPI registry since March 2012. He is enrolled in Medicare PECOS, is affiliated with Greater Baltimore Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 1
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
Mr. Timothy Edward Sommerville 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
3Medicare enrollment records show Timothy Sommerville reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Towson, MD 21286
- Reassigned Medicare billing, Maryland enrollment
- 444 clinicians in this Medicare group
Baltimore, MD 21239
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 3,530 clinicians in this Medicare group
Jamestown, OH 45335
- Reassigned Medicare billing, Ohio enrollment
- 744 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 4
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Greater Baltimore Medical Center
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21237 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.
BALTIMORE, MD 21237
BALTIMORE, MD 21237
BALTIMORE, MD 21237
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 Timothy Sommerville's NPI number?
The NPI number for Timothy Sommerville is 1477829943. It was assigned to this individual provider in the NPPES registry on March 28, 2012.
Where is Timothy Sommerville located?
Timothy Sommerville practices at 9000 Franklin Square Dr, Baltimore, MD 21237. The listed phone number is (443) 777-7000.
What is Timothy Sommerville's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Timothy Sommerville enrolled in Medicare?
Yes. Timothy Sommerville 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 Timothy Sommerville's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Sommerville reassigns Medicare benefits to 3 organizations: Greater Baltimore Medical Center, Inc. (Towson, MD), Medstar Medical Group II LLC (Baltimore, MD) and Mvhe Inc (Jamestown, OH). 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 Timothy Sommerville's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Timothy Sommerville accept?
Health plans from Anthem Blue Cross and Blue Shield list Timothy Sommerville 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 Timothy Sommerville affiliated with any hospitals?
According to CMS data, Timothy Sommerville is affiliated with Greater Baltimore Medical Center.
When was this NPI record last updated?
The NPPES record for Timothy Sommerville was last updated on September 5, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Mr. Timothy Edward Sommerville, MD · NPI 1477829943
Internal Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since March 28, 2012.
## Identity
- **NPI:** 1477829943 (Entity type: Individual)
- **Enumerated:** March 28, 2012
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** D0087358 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 9000 FRANKLIN SQUARE DR, Baltimore, MD 21237-3901
- **Phone:** (443) 777-7000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Greater Baltimore Medical Center, Inc. (NPI 1760204721, Towson, MD); Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD); Mvhe Inc (NPI 1982657318, Jamestown, OH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** September 5, 2022
- **Other identifiers:** Medicaid 0167459 (OH)
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Source: [NPI Profile](https://npiprofile.com/npi/1477829943) · Data from the CMS NPPES public registry.