Allison B. Colby, MPAS, PA-C
Physician Assistant · Woodbridge, VA
Allison B. Colby, MPAS, PA-C is a physician assistant with a practice address in Woodbridge, Virginia, and NPI 1720352933, issued on Mar 6, 2012. Check the license (Virginia 0110003822, as entered in NPPES) with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Allison B. Colby
- Credential
- MPAS, PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 0110003822 VA
Self-reported in NPPES; status is on the state search - Practice location
- 4379 Ridgewood Center Dr, Woodbridge, VA 22192
- Phone
- (703) 680-7950
- Enumerated
- Mar 6, 2012
- Record last updated
- Nov 19, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200311002815); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,408 in Virginia → Look up another NPI →
Also registered at 4379 Ridgewood Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Allison B. Colby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this profession
Search for license 0110003822Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average physician assistant in 2024
1,128 Medicare Part D claims for 116 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Atorvastatin Calcium124 claims
- Levothyroxine Sodium73 claims
- Amlodipine Besylate70 claims
- Metformin Hcl67 claims
- Lisinopril62 claims
- Losartan Potassium57 claims
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.
Industry payments in 2024: $26.24
1 payment: food and beverage; the largest payer was Pfizer Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Greater Prince William Area Community Health Center IncManassas, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allison B. Colby among 4,408 physician assistant records in Virginia
Allison B. Colby, MPAS, PA-C is one of 4,408 physician assistant records with a practice address in Virginia. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 29% of them.
- NPI issued2012 · 29% of these records are older, 68% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2012 · median 2018 among the 2,885 with a school on file
- Record last updated2019 · 33% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 physician assistant records list a practice address in Woodbridge
They are 46 of the 2,253 NPPES records with a practice address in Woodbridge, and 4,408 physician assistant records in Virginia.
All 4,408 in Virginia → Every provider in Woodbridge → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Collins Boateng, PA-CLake Ridge, VA 221921629502257
- Carlyle Casella, PAWoodbridge, VA 221921679881486
- Kristin Clark, PA-CWoodbridge, VA 221921528291069
- Victoria Dean, PA-CWoodbridge, VA 221921477213999
- Samuel Dogbey, PAWoodbridge, VA 221921356854541
- Elizabeth Gallagher, PAWoodbridge, VA 221921427116326
- Jaycee Hart, PA-CWoodbridge, VA 221921629726021
- Kate Lee, PA-CWoodbridge, VA 221921407417033
Common questions
What is Allison B. Colby, MPAS, PA-C's NPI number?
Allison B. Colby, MPAS, PA-C's National Provider Identifier (NPI) is 1720352933, issued on Mar 6, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Allison B. Colby, MPAS, PA-C located?
The NPPES record lists a practice address at 4379 Ridgewood Center Dr, Woodbridge, VA, 22192. Phone: (703) 680-7950. Providers update this record themselves, so call before visiting.
How can I verify Allison B. Colby, MPAS, PA-C's license?
NPPES lists Virginia license number 0110003822, as entered by the provider. Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does Allison B. Colby, MPAS, PA-C prescribe under Medicare Part D?
In 2024, Allison B. Colby, MPAS, PA-C had 1,128 Medicare Part D claims for 116 beneficiaries; the average among physician assistant prescribers was 830. 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.