Derek Ballas, D.O.
Obstetrics & Gynecology Physician · Annapolis, MD
Derek Ballas, D.O. is an obstetrics & gynecology physician with a practice address in Annapolis, Maryland, and NPI 1164789780, issued on Apr 19, 2012. Check the license (Maryland H91155, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Derek Ballas
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- H91155 MD
Self-reported in NPPES; status is on the state search - Practice location
- 2000 Medical Pkwy Ste 309, Annapolis, MD 21401
- Phone
- (410) 224-1133
- Enumerated
- Apr 19, 2012
- Record last updated
- Dec 31, 2024
- Fax
- (410) 266-1639
- Medicare enrollment
- Enrolled (PECOS I20210520000189); accepts Medicare assignment
- Medical or professional school
- West Virginia School Of Osteopathic Medicine, 2012
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,034 in Maryland → Look up another NPI →
Also registered at 2000 Medical Pkwy Ste 309
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melissa Kirven, MDObstetrics & Gynecology Physician1417915703
- Paula Radon, MDObstetrics & Gynecology Physician1528081759
- Jessica Ton, MDObstetrics & Gynecology Physician1992061493
Verify Derek Ballas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license H91155Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
42 Medicare Part D claims for 13 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol14 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: $44.96
2 payments; by number, the most common kind was food and beverage; the largest payer was Ethicon US, LLC. The 21,429 providers of this specialty with any payment received $1,030.61 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
- Luminis Health Medical Group, LLCAnnapolis, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Derek Ballas among 1,034 obstetrics & gynecology physician records in Maryland
Derek Ballas, D.O. is one of 1,034 obstetrics & gynecology physician records with a practice address in Maryland. 75% 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 73% of them.
- NPI issued2012 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2012 · median 2005 among the 597 with a school on file
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 obstetrics & gynecology physician records list a practice address in Annapolis
They are 48 of the 3,629 NPPES records with a practice address in Annapolis, and 1,034 obstetrics & gynecology physician records in Maryland.
All 1,034 in Maryland → Every provider in Annapolis → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Frederick Guckes, M.D.Annapolis, MD 214011477556173
- James Haddock, M.D.Annapolis, MD 214011578566287
- Claudia Hays, M.D.Annapolis, MD 214011285637983
- Ayanna James, M.D.Annapolis, MD 214011366448953
- Monica Jones, M.D.Annapolis, MD 214011083693188
- John Keats, M.D.Annapolis, MD 214011538197876
- Melissa Kirven, MDAnnapolis, MD 214011417915703
- Jennifer Lawrence, MDAnnapolis, MD 214011396736427
Common questions
What is Derek Ballas, D.O.'s NPI number?
Derek Ballas, D.O.'s National Provider Identifier (NPI) is 1164789780, issued on Apr 19, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Derek Ballas, D.O. located?
The NPPES record lists a practice address at 2000 Medical Pkwy Ste 309, Annapolis, MD, 21401. Phone: (410) 224-1133. Providers update this record themselves, so call before visiting.
How can I verify Derek Ballas, D.O.'s license?
NPPES lists Maryland license number H91155, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Derek Ballas, D.O. prescribe under Medicare Part D?
In 2024, Derek Ballas, D.O. had 42 Medicare Part D claims for 13 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.