Charles Zavala, M.D.
NPI 1598805632 · Pulmonary Disease Physician · Brownsville, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Zavala, M.D. is a Pulmonary Disease Physician provider in Brownsville, TX (NPI 1598805632).
Provider details
- NPI number
- 1598805632
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- F0099 (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
114 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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 63 | $47 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 31 | $74 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 20 | $164 |
Typical Medicare-allowed amounts for these services range $47–$164 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-07
- Last updated
- 2022-02-03
- Certified
- 2022-02-03
Frequently asked questions
- What is Charles Zavala's NPI number?
- Charles Zavala's National Provider Identifier (NPI) is 1598805632, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Zavala's specialty?
- Charles Zavala is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Zavala located?
- Charles Zavala's practice location on file with NPPES is 4401 Morrison Rd, Brownsville, TX 78526-9607.
- What is Charles Zavala's phone number?
- The practice phone number listed in the NPPES registry for Charles Zavala is (956) 541-0162.
- Does Charles Zavala accept Medicare?
- Charles Zavala is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Zavala's NPI active?
- Yes — Charles Zavala's NPI (1598805632) is active in the NPPES registry as of the last update on 2022-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.