Madeleine Gantz, MD
NPI 1821526674 · Dermatology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Madeleine Gantz, MD is a Dermatology Physician provider in Houston, TX (NPI 1821526674).
Provider details
- NPI number
- 1821526674
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- T0487 (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
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
7 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
172 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 | 47 | $89 |
| Biopsy of Related Skin Growth, First Growth11102 | 35 | $95 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 26 | $45 |
| Destruction of Skin Growth, 1-14 Growths17110 | 25 | $109 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 23 | $126 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 20 | 16 |
| Clobetasol Propionate | 17 | 14 |
| Valacyclovir Hclbrand: Valacyclovir | 15 | — |
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.
$841 across 19 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 (6)
- 12319 N Mopac Expy Ste 100Austin, TX 78758-2486Phone: (512) 837-3376
- 5145 Fm 620 N Ste B-110Austin, TX 78732-1852Phone: (512) 266-0007
- 3705 Medical Pkwy Ste 340Austin, TX 78705-1023Phone: (512) 454-3781
- 3944 S Fm 620Bldg 6, Ste 201Bee Cave, TX 78738Phone: (512) 366-8568
- 13830 Sawyer Ranch Rd Ste 304Dripping Springs, TX 78620-5514Phone: (512) 829-0009
- 1601 E Pflugerville Pkwy Ste 1102Pflugerville, TX 78660-6148Phone: (512) 252-3700
Registry dates
- Enumerated
- 2017-05-24
- Last updated
- 2022-07-25
- Certified
- 2022-07-25
Frequently asked questions
- What is Madeleine Gantz's NPI number?
- Madeleine Gantz's National Provider Identifier (NPI) is 1821526674, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Madeleine Gantz's specialty?
- Madeleine Gantz is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Madeleine Gantz located?
- Madeleine Gantz's practice location on file with NPPES is 1900 Saint James Pl Ste 600, Houston, TX 77056-4136.
- What is Madeleine Gantz's phone number?
- The practice phone number listed in the NPPES registry for Madeleine Gantz is (713) 850-0240.
- Does Madeleine Gantz accept Medicare?
- Madeleine Gantz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Madeleine Gantz's NPI active?
- Yes — Madeleine Gantz's NPI (1821526674) is active in the NPPES registry as of the last update on 2022-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.