Mercedes Terrell, MD
NPI 1578748653 · Internal Medicine Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mercedes Terrell, MD is a Internal Medicine Physician provider in Baltimore, MD (NPI 1578748653).
Provider details
- NPI number
- 1578748653
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- D69591 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
401 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 160 | $81 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 151 | $9 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 48 | $49 |
| Catheterization for Collection of Specimen(s) (multiple Patients)P9615 | 26 | $4 |
| Hemoglobin A1c Level83036 | 16 | $10 |
Typical Medicare-allowed amounts for these services range $4–$81 (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 · 115 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 336 | 144 |
| Amlodipine Besylate | 332 | 140 |
| Potassium Chloride | 256 | 99 |
| Losartan Potassium | 198 | 75 |
| Gabapentin | 185 | 76 |
| Hydrochlorothiazide | 173 | 70 |
| Furosemide | 160 | 59 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$876 across 45 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
Registry dates
- Enumerated
- 2008-01-08
- Last updated
- 2013-05-09
Frequently asked questions
- What is Mercedes Terrell's NPI number?
- Mercedes Terrell's National Provider Identifier (NPI) is 1578748653, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mercedes Terrell's specialty?
- Mercedes Terrell is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mercedes Terrell located?
- Mercedes Terrell's practice location on file with NPPES is 4920 Campbell Blvd, Baltimore, MD 21236-5916.
- What is Mercedes Terrell's phone number?
- The practice phone number listed in the NPPES registry for Mercedes Terrell is (443) 442-2300.
- Does Mercedes Terrell accept Medicare?
- Mercedes Terrell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mercedes Terrell's NPI active?
- Yes — Mercedes Terrell's NPI (1578748653) is active in the NPPES registry as of the last update on 2013-05-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.