Allison Colby, MPAS, PA-C
Physician Assistant · Woodbridge, VA
Allison 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 with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Allison Colby
- Credential
- MPAS, PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 4379 Ridgewood Center Dr, Woodbridge, VA 22192
- Phone
- (703) 680-7950
- Enumerated
- Mar 6, 2012
- Entity
- Type 1 · individual
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 Colby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this professionCheck 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 832 among the 95,030 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, mostly food and beverage; the largest payer was Pfizer Inc.. The 61,144 providers of this specialty with any payment received $853.85 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.
One hospital or facility affiliation
- Greater Prince William Area Community Health Center IncManassas, VA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
42 physician assistant records list a Woodbridge practice address
They are 42 of the 2,253 NPPES records with a Woodbridge practice address, and 4,003 physician assistant records in Virginia.
All 42 in Woodbridge → All 4,003 in Virginia → Every provider in Woodbridge →
Other physician assistant records in Virginia
- Tehreem AbbasWoodbridge, VA1083416937
- Emma AbbottRoanoke, VA1235737891
- Annalyn Abcede, PAChesapeake, VA1821479544
- Dalia Abdalla, PA-CAldie, VA1861342677
- Hamdi Abdullahi, PA-CAlexandria, VA1407620750
- Daniel Abeel, P.A.-CFort Belvoir, VA1770503070
- Elizabeth AbelBlacksburg, VA1972380152
- Rachele Abel, PA-CNorfolk, VA1871361808
- Stephen AbercrombieRoanoke, VA1700455227
- Haven Abernathy, PACharlottesville, VA1316806219
Common questions
What is Allison Colby, MPAS, PA-C's NPI number?
Allison 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 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 Colby, MPAS, PA-C's license?
Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does Allison Colby, MPAS, PA-C prescribe under Medicare Part D?
In 2024, Allison Colby, MPAS, PA-C had 1,128 Medicare Part D claims for 116 beneficiaries; the average among physician assistant prescribers was 832. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.