Derek Ballas, D.O.
NPI 1164789780 · Obstetrics & Gynecology Physician · Annapolis, MD
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Ballas, D.O. is a Obstetrics & Gynecology Physician provider in Annapolis, MD (NPI 1164789780).
Provider details
- NPI number
- 1164789780
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
12 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 12 | $41 |
Typical Medicare-allowed amounts for these services range $41–$41 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Estradiol | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$45 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (4)
- 2003 Medical Pkwy Ste 350Annapolis, MD 21401-3081Phone: (443) 951-4286Fax: (443) 949-7380
- 4175 N Hanson Ct Ste 203Bowie, MD 20716-3183Phone: (410) 224-4442
- 202 Coursevall DrCentreville, MD 21617-2804Phone: (410) 810-0767
- 7501 Greenway Center Dr Ste 910Greenbelt, MD 20770-3514Phone: (301) 982-0657Fax: (240) 956-5166
Registry dates
- Enumerated
- 2012-04-19
- Last updated
- 2024-12-31
- Certified
- 2024-12-31
Frequently asked questions
- What is Derek Ballas's NPI number?
- Derek Ballas's National Provider Identifier (NPI) is 1164789780, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Ballas's specialty?
- Derek Ballas is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Derek Ballas located?
- Derek Ballas's practice location on file with NPPES is 2000 Medical Pkwy Ste 309, Annapolis, MD 21401-3745.
- What is Derek Ballas's phone number?
- The practice phone number listed in the NPPES registry for Derek Ballas is (410) 224-1133.
- Does Derek Ballas accept Medicare?
- Derek Ballas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Ballas's NPI active?
- Yes — Derek Ballas's NPI (1164789780) is active in the NPPES registry as of the last update on 2024-12-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.