WILLIAM F SIMONDS MD
NPI 1285625152
Internal Medicine - Endocrinology, Diabetes & Metabolism in Bethesda, MD
About William F Simonds Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM F SIMONDS MD (NPI 1285625152) is an individual endocrinology, diabetes & metabolism provider in Bethesda, Maryland, licensed in Maryland (D36520) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Suburban Hospital, and is a graduate of University Of Pittsburgh School Of Medicine (1981).
NPPES Registry Identity
Specialties & Licenses 3
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
William F Simonds 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 William Simonds reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bethesda, MD 20814
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Tysons, VA 22102
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1689485963 (Maryland)
- 691 clinicians in this Medicare group
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 338 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 2
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.
Suburban Hospital
Acute Care Hospitals · Bethesda, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20814 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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
BETHESDA, MD 20814
BETHESDA, MD 20814
BETHESDA, MD 20814
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 William Simonds's NPI number?
The NPI number for William Simonds is 1285625152. It was assigned to this individual provider in the NPPES registry on October 31, 2005.
Where is William Simonds located?
William Simonds practices at 8600 Old Georgetown Rd, Bethesda, MD 20814. The listed phone number is (301) 896-3517.
What is William Simonds's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is William Simonds enrolled in Medicare?
Yes. William Simonds 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 William Simonds's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Simonds reassigns Medicare benefits to 3 organizations: Johns Hopkins University (Bethesda, MD), Johns Hopkins Community Physicians, Inc (Tysons, VA) and Johns Hopkins University (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 William Simonds's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is William Simonds affiliated with any hospitals?
According to CMS data, William Simonds is affiliated with Suburban Hospital.
When was this NPI record last updated?
The NPPES record for William Simonds was last updated on December 17, 2019. 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.
# William F Simonds, MD · NPI 1285625152
Endocrinology, Diabetes & Metabolism physician in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since October 31, 2005.
## Identity
- **NPI:** 1285625152 (Entity type: Individual)
- **Enumerated:** October 31, 2005
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **State license:** D36520 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 8600 OLD GEORGETOWN RD, Bethesda, MD 20814-1422
- **Phone:** (301) 896-3517 · **Fax:** (301) 493-4259
## 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): Johns Hopkins University (NPI 1578569240, Bethesda, MD); Johns Hopkins Community Physicians, Inc (NPI 1790631695, Tysons, VA); Johns Hopkins University (NPI 1902332133, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Pittsburgh School Of Medicine, class of 1981
## Record status
- **NPPES last updated:** December 17, 2019
- **Other identifiers:** Medicaid 415096100 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1285625152) · Data from the CMS NPPES public registry.