Karl Frey, DDS
NPI 1821091398 · Oral and Maxillofacial Surgery (Dentist) · Harlingen, TX
Enrolled with Medicare as Practitioner - Maxillofacial Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Frey, DDS is a Oral and Maxillofacial Surgery (Dentist) provider in Harlingen, TX (NPI 1821091398).
Provider details
- NPI number
- 1821091398
- Entity type
- Individual
- Primary specialty
- Oral and Maxillofacial Surgery (Dentist)Dental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- No
- License
- 12285 (TX)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
21 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Chlorhexidine Gluconate | 439 | 377 |
| Ibuprofen | 348 | 330 |
| Penicillin V Potassium | 288 | 270 |
| Amoxicillin | 78 | 73 |
| Clindamycin Hcl | 49 | 39 |
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.
$51 across 1 record (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 (2)
- 2330 Central BlvdBrownsville, TX 78520-8714Phone: (956) 542-2870
- 100 E Pecan BlvdMcallen, TX 78501-9555Phone: (956) 682-5292
Registry dates
- Enumerated
- 2005-05-27
- Last updated
- 2025-03-14
- Certified
- 2025-03-14
Frequently asked questions
- What is Karl Frey's NPI number?
- Karl Frey's National Provider Identifier (NPI) is 1821091398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Frey's specialty?
- Karl Frey is listed in the NPPES registry with a primary specialty of Oral and Maxillofacial Surgery (Dentist) (Dental Providers).
- Where is Karl Frey located?
- Karl Frey's practice location on file with NPPES is 1622 N Ed Carey Dr, Harlingen, TX 78550-8286.
- What is Karl Frey's phone number?
- The practice phone number listed in the NPPES registry for Karl Frey is (956) 428-4258.
- Does Karl Frey accept Medicare?
- Karl Frey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Frey's NPI active?
- Yes — Karl Frey's NPI (1821091398) is active in the NPPES registry as of the last update on 2025-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.