Nelson Kalaf, MD
NPI 1205858107 · Internal Medicine Physician · Mission, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nelson Kalaf, MD is a Internal Medicine Physician provider in Mission, TX (NPI 1205858107).
Provider details
- NPI number
- 1205858107
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- L 0307 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,051 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 337 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 337 | $87 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 98 | $124 |
| Advance Care Planning, First 30 Minutes99497 | 91 | $78 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 86 | $18 |
| Administration of Influenza Virus VaccineG0008 | 46 | $31 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 194 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,065 | 333 |
| Levothyroxine Sodium | 698 | 203 |
| Rosuvastatin Calcium | 669 | 215 |
| Amlodipine Besylate | 599 | 192 |
| Losartan Potassium | 463 | 147 |
| Lisinopril | 458 | 143 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-23
- Last updated
- 2024-02-06
- Certified
- 2024-02-06
Frequently asked questions
- What is Nelson Kalaf's NPI number?
- Nelson Kalaf's National Provider Identifier (NPI) is 1205858107, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nelson Kalaf's specialty?
- Nelson Kalaf is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nelson Kalaf located?
- Nelson Kalaf's practice location on file with NPPES is 2023 E Griffin Pkwy, Mission, TX 78572-3222.
- What is Nelson Kalaf's phone number?
- The practice phone number listed in the NPPES registry for Nelson Kalaf is (956) 585-2525.
- Does Nelson Kalaf accept Medicare?
- Nelson Kalaf is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nelson Kalaf's NPI active?
- Yes — Nelson Kalaf's NPI (1205858107) is active in the NPPES registry as of the last update on 2024-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.