Margaret A. Guest, DO
Physical Medicine & Rehabilitation Physician · Wilmington, DE
Margaret A. Guest, DO is a physical medicine & rehabilitation physician with a practice address in Wilmington, Delaware, and NPI 1700830148, issued on May 20, 2006. Check the license (Delaware C2-0011114, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Margaret A. Guest
- Credential
- DO
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License numbers
- C2-0011114 DE
25MB05939700 NJ
OS007450L PA
Self-reported in NPPES; status is on the state search - Practice location
- 501 West 14TH Street, Wilmington, DE 19801
- Phone
- (302) 428-2717
- Enumerated
- May 20, 2006
- Record last updated
- Oct 25, 2022
- Fax
- (302) 428-6686
- Medicare enrollment
- Enrolled (PECOS I20050405001247); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1990
- Entity
- Type 1 · individual
8 nearest physical medicine & rehabilitation physician records → All 64 in Delaware → Look up another NPI →
Also registered at 501 West 14TH Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Margaret A. Guest in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C2-0011114Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024
58 Medicare Part D claims for 24 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Somc Medical Care Foundation, Inc.Portsmouth, OH
- Virtua Medical Group, PACamden, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret A. Guest among 64 physical medicine & rehabilitation physician records in Delaware
Margaret A. Guest, DO is one of 64 physical medicine & rehabilitation physician records with a practice address in Delaware. 52% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 66% newer
- In a Medicare fileYes · 52% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated1990 · median 2007 among the 28 with a school on file
- Record last updated2022 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208100000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in Delaware
There are 64 physical medicine & rehabilitation physician records in Delaware.
All 64 in Delaware → Every provider in Wilmington → Physical Medicine & Rehabilitation Physician nationwide →
The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes
- John Cheng, M.D.Wilmington, DE 198011548688195
- Andrew Bernstein, DPT, PTWilmington, DE 198031215791397
- Yong Kim, M.D.Wilmington, DE 198031679510994
- Nicole Marcantuono, MDWilmington, DE 198031598968521
- Melissa Michaels, PT, DPTWilmington, DE 198031417387416
- Eileen Shieh, M.D.Wilmington, DE 198031225328990
- James Bonner, M.D.Wilmington, DE 198051184642407
- Jerrald Chen, M.D.Wilmington, DE 198051356760714
Common questions
What is Margaret A. Guest, DO's NPI number?
Margaret A. Guest, DO's National Provider Identifier (NPI) is 1700830148, issued on May 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margaret A. Guest, DO located?
The NPPES record lists a practice address at 501 West 14TH Street, Wilmington, DE, 19801. Phone: (302) 428-2717. Providers update this record themselves, so call before visiting.
How can I verify Margaret A. Guest, DO's license?
NPPES lists Delaware license number C2-0011114, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Margaret A. Guest, DO prescribe under Medicare Part D?
In 2024, Margaret A. Guest, DO had 58 Medicare Part D claims for 24 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.