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DR. WILLIAM KEYS M.D., PH.D
NPI 1376537266
Specialist in Manchester, MD

Active since September 07, 2005PECOS EnrolledAccepts Medicare Assignment
2975 MANCHESTER RD, UNIT A, MANCHESTER, MD 21102(410) 374-8100(410) 374-8104 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. William Keys M.d., Ph.d NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM KEYS M.D., PH.D (NPI 1376537266) is an individual specialist in Manchester, Maryland, licensed in Maryland (D0041962) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Maryland School Of Medicine (1988).

NPPES Registry Identity

NPI1376537266
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDR. WILLIAM KEYSCredential: M.D., PH.D
Location Address2975 MANCHESTER RD, UNIT AManchester, MD 21102-1802
Mailing Address2975 Manchester Rd, Unit AManchester, MD 21102-1802 · (410) 374-8100 · Fax (410) 374-8104
Phone(410) 374-8100
Fax(410) 374-8104
Sole ProprietorYes
Medical School CMSUniversity Of Maryland School Of MedicineGraduated 1988
Enumeration DateSeptember 7, 2005
Last NPPES UpdateJuly 8, 2007
✔ NPI 1376537266 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in MD · D0041962
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
2975 MANCHESTER RD, Manchester, MD 21102
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Other Identifiers 1

Medicare UPINF35424MD

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. William Keys M.d., Ph.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.

PECOS PAC ID5395879712
PECOS Enrollment IDI20100819001100
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show William Keys reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Keys Neurology, P.A.
Same address
Neurological Surgery
2975 MANCHESTER RD, UNIT A
Manchester, MD 21102
  • Reassigned Medicare billing, Maryland enrollment
  • Medicare enrollment name: Keys Neurology, PA
NPI 1962681759 (410) 374-8100

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
263 services108 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
96 services69 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
46 services46 patients

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KEYS NEUROLOGY, P.A.
Neurological Surgery
2975 MANCHESTER RD, UNIT A
MANCHESTER, MD 21102
Carroll County (410) 374-8100

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 Keys's NPI number?

The NPI number for William Keys is 1376537266. It was assigned to this individual provider in the NPPES registry on September 7, 2005.

Where is William Keys located?

William Keys practices at 2975 Manchester Rd Unit A, Manchester, MD 21102. The listed phone number is (410) 374-8100.

What is William Keys's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is William Keys enrolled in Medicare?

Yes. William Keys 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 William Keys's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Keys reassigns Medicare benefits to Keys Neurology, P.A. (Manchester, 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 William Keys'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 William Keys was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.