Melissa Isbell, MD
NPI 1881660660 · Nephrology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Isbell, MD is a Nephrology Physician provider in San Antonio, TX (NPI 1881660660).
Provider details
- NPI number
- 1881660660
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- H9526 (TX)
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,976 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) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 647 | $57 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 639 | $106 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 572 | $115 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 430 | $15 |
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 346 | $43 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 98 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dapagliflozin Propanediolbrand: Farxiga | 195 | 55 |
| Allopurinol | 188 | 52 |
| Carvedilol | 185 | 56 |
| Furosemide | 174 | 64 |
| Amlodipine Besylate | 174 | 60 |
| Losartan Potassium | 156 | 52 |
| Nifedipinebrand: Nifedipine Er | 126 | 48 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,775 across 101 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 (1)
- 5131 Medical DrSte 120San Antonio, TX 78229-5062Phone: (210) 614-1515Fax: (210) 615-6904
Registry dates
- Enumerated
- 2006-02-23
- Last updated
- 2019-01-04
Frequently asked questions
- What is Melissa Isbell's NPI number?
- Melissa Isbell's National Provider Identifier (NPI) is 1881660660, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Isbell's specialty?
- Melissa Isbell is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Melissa Isbell located?
- Melissa Isbell's practice location on file with NPPES is 4458 Medical Dr Ste 205, San Antonio, TX 78229-3748.
- What is Melissa Isbell's phone number?
- The practice phone number listed in the NPPES registry for Melissa Isbell is (210) 614-1515.
- Does Melissa Isbell accept Medicare?
- Melissa Isbell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Isbell's NPI active?
- Yes — Melissa Isbell's NPI (1881660660) is active in the NPPES registry as of the last update on 2019-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.