Joseph An, D.O.
Hematology & Oncology Physician · Portsmouth, VA
Joseph An, D.O. is a hematology & oncology physician with a practice address in Portsmouth, Virginia, and NPI 1144512450, issued on May 4, 2011. Check the license on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Joseph An
- Credential
- D.O.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 20A12547 CA
Self-reported in NPPES; status is on the state search - Practice location
- 620 John Paul Jones Cir, Portsmouth, VA 23708
- Phone
- (757) 953-1043
- Enumerated
- May 4, 2011
- Record last updated
- Jun 13, 2022
- Fax
- (757) 953-1036
- Medicare enrollment
- Enrolled (PECOS I20220919000590); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 346 in Virginia → Look up another NPI →
Also registered at 620 John Paul Jones Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Aalto, DPMFoot & Ankle Surgery Podiatrist1518196054
- Joy Aaron, RNRegistered Nurse1083765911
- Mark Abadilla, CRNACertified Registered Nurse Anesthetist1447135793
- Jason Abbot, PHARMDPharmacotherapy Pharmacist1215907324
- Renee AbernathyStudent in an Organized Health Care Education/Training Program1124969670
- Vivek Abraham, MDStudent in an Organized Health Care Education/Training Program1942829494
Verify Joseph An in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health ProfessionsCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average hematology & oncology physician in 2024
1,781 Medicare Part D claims for 286 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 151 claims were for opioids.
Most prescribed
- Prednisone117 claims
- Anastrozole107 claims
- Gabapentin91 claims
- Prochlorperazine Maleate62 claims
- Lenalidomide59 claims
- Letrozole57 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.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- West Virginia University Medical CorporationMartinsburg, WV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph An among 346 hematology & oncology physician records in Virginia
Joseph An, D.O. is one of 346 hematology & oncology physician records with a practice address in Virginia. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 67% of them.
- NPI issued2011 · 67% of these records are older, 30% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2011 · median 2005 among the 250 with a school on file
- Record last updated2022 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Virginia
There are 346 hematology & oncology physician records in Virginia.
All 346 in Virginia → Every provider in Portsmouth → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- John Mattingly, MDPortsmouth, VA 237081922327907
- John Moore, M.D.Portsmouth, VA 237081932519188
- Ashley Otto, MDPortsmouth, VA 237081972248300
- Soundar Rajan, MD FACPPortsmouth, VA 237041396851390
- Lloyd Shabazz, M.D.Portsmouth, VA 237041720082183
- Rudolph Willis, M.D.Portsmouth, VA 237041831194216
- Ruby Kochhar, MDHampton, VA 236671356457964
- Omer Ali, MDHampton, VA 236661881057206
Common questions
What is Joseph An, D.O.'s NPI number?
Joseph An, D.O.'s National Provider Identifier (NPI) is 1144512450, issued on May 4, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Joseph An, D.O. located?
The NPPES record lists a practice address at 620 John Paul Jones Cir, Portsmouth, VA, 23708. Phone: (757) 953-1043. Providers update this record themselves, so call before visiting.
How can I verify Joseph An, D.O.'s license?
Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joseph An, D.O. prescribe under Medicare Part D?
In 2024, Joseph An, D.O. had 1,781 Medicare Part D claims for 286 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Joseph An, D.O.'s MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.