NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1659509990 MD
Verify on CMS → Sridhar Venkatachalam, MD
Internal Medicine Physician in Corpus Christi, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 174,792 in Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
5K
Medicare Part D claims · 720 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.5 · Exceptional
Industry payments
$57.52
3 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Sridhar Venkatachalam, MD reported a CMS MIPS final score of 100/100 - above the 83.5 national average - and filed 5,338 Medicare Part D claims in 2024.
- 100/100
- MIPS score · +17 vs avg
- 5K
- Part D claims, 2024
- 83%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Sridhar Venkatachalam, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1659509990), first enumerated 06/25/2009.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 5,338 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 100/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$57.52 in reported industry payments (3 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Texas statewide board action statistics are published annually — these figures describe aggregate state activity, not Sridhar Venkatachalam, MD's individual license status. Verify directly with the state medical board.
Source: TMB annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1659509990 · Internal Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · MIPS-ELITE · RX-MID · BOOK-MID · PHOTO-FINISH
- NPI-10 1659509990
- ENUM-MID 2009
- TAX-MEGA 175K Internal Medicine
- MIPS-ELITE 100/100
- RX-MID 5,338
- BOOK-MID 11,069 in Texas
- PHOTO-FINISH Zina Al-Sabbagh · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Venkatachalam · …
Venkatachalam · this provider
100 MIPS pts
- Shoma Bommena · …
Shoma Bommena
100 MIPS pts
- Zina Al-Sabbagh …
Zina Al-Sabbagh
100 MIPS pts
- Kristian Balle ·…
Kristian Balle
100 MIPS pts
- Surekha Bandlamu…
Surekha Bandlamuri
100 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Sridhar Venkatachalam, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
100 ≥ 92nd percentile 92% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Sridhar Venkatachalam, MD sits
This provider among internal medicine physician peers
Across the 34,612 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Sridhar Venkatachalam, MD writes more Part D claims than 82% of them and scores higher on MIPS quality than 93% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Sridhar Venkatachalam, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Sridhar Venkatachalam, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Sridhar Venkatachalam, MD?
High performer (top quartile)Primary specialty
Internal Medicine Physician
Medicare Part D claims
5,338 92% vs specialty avg
MIPS final score
100/100 16.5 pts vs avg
Specialty distribution in Texas
How Internal Medicine Physician compares to other specialties among Texas providers
Medicare quality performance, MIPS
Sridhar Venkatachalam, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 100/100
- vs 83.5 national avg · 2023 performance year
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1659509990 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/25/2009 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Measured-score avg: 83.5
98.451
Quality
Reporting: Group practice
Hospital and facility affiliations
Facilities where Sridhar Venkatachalam, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Christus Trinity Clinic
Kingsville, TX
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Sridhar Venkatachalam, MD. Source: openpaymentsdata.cms.gov.
Total received
$58
Largest payer
PFIZER INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Texas TMB 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 - they are NOT specific to Sridhar Venkatachalam, MD. To verify Sridhar Venkatachalam, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Sridhar Venkatachalam, MD - brand share 17.0%
Internal Medicine Physician average
17% brand-name claims vs 83% generic, on 5,338 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
5,338
Total Claims
$666K
Total Drug Cost
720
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,831.167
- Total Day Supply
- 293,067
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $624K
- Generic Drug Cost
- $42K
Patient Demographics
- Average Patient Age
- 73.8 years
- Avg HCC Risk Score
- 2.20
- Gender Split
- 50% female / 50% male
- Age Distribution
- <65: 71, 65-74: 313, 75-84: 259, 85+: 77
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Sridhar Venkatachalam, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Metoprolol Succinate
Metoprolol Succinate
619 claims
- Atorvastatin Calcium
Atorvastatin Calcium
539 claims
- Eliquis
Eliquis
526 claims
- Amlodipine Besylate
Amlodipine Besylate
395 claims
- Hydralazine Hcl
Hydralazine Hcl
267 claims
- Carvedilol
Carvedilol
260 claims
- Clopidogrel 236
Clopidogrel
236 claims
- Losartan Potassium 221
Losartan Potassium
221 claims
| Drug | Claims |
|---|---|
| Metoprolol Succinate | 619 |
| Atorvastatin Calcium | 539 |
| Eliquis Apixaban | 526 |
| Amlodipine Besylate | 395 |
| Hydralazine Hcl | 267 |
| Carvedilol | 260 |
| Clopidogrel Clopidogrel Bisulfate | 236 |
| Losartan Potassium | 221 |
| Ezetimibe | 194 |
| Isosorbide Mononitrate Er Isosorbide Mononitrate | 194 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Sridhar Venkatachalam, MD fits within the Internal Medicine Physician landscape nationally.
174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider
Sridhar Venkatachalam, MD's 5,338 claims are above the specialty average of 2,785.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Venkatachalam, both outside Texas so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (100 here).
Same NPPES enumeration year (2009)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Venkatachalam.
One of 11,069 Internal Medicine Physician providers enrolled in Texas, 5 are shown here.
Dr. Muhammad A. Sattar
MD
Dallas, TX
Dr. Gayatri Aaluri
MD
Galveston, TX
Anunaya Aashish
Denton, TX
Dr. Queenie Ann Abad
M.D.
San Antonio, TX
Dr. Fuad Abaleka
M.D
Lubbock, TX
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Sridhar Venkatachalam, MD's specialty? ▼
Sridhar Venkatachalam, MD specializes in Internal Medicine Physician and practices in Corpus Christi, Texas. Credentials: MD.
How much does Sridhar Venkatachalam, MD prescribe under Medicare Part D? ▼
In 2024, Sridhar Venkatachalam, MD wrote 5,338 Medicare Part D claims totaling $666K in drug costs for 720 beneficiaries.
What is Sridhar Venkatachalam, MD's Medicare quality score? ▼
Sridhar Venkatachalam, MD has a CMS MIPS Final Score of 100/100 (Quality: 98.5). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Sridhar Venkatachalam, MD located? ▼
Sridhar Venkatachalam, MD is located at 1521 S STAPLES ST STE 700, Corpus Christi, TX, 78404. Phone: (361) 888-8271.
What is Sridhar Venkatachalam, MD's NPI number? ▼
Sridhar Venkatachalam, MD's National Provider Identifier (NPI) is 1659509990, issued on 06/25/2009.
Does Sridhar Venkatachalam, MD prescribe more brand-name or generic drugs? ▼
Sridhar Venkatachalam, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $624K in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Sridhar Venkatachalam, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Sridhar Venkatachalam, MD's most frequently prescribed drugs include Metoprolol Succinate, Atorvastatin Calcium, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sridhar Venkatachalam, MD accept Medicare? ▼
Sridhar Venkatachalam, MD appears in CMS Medicare data with 5,338 Part D claims and 720 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sridhar Venkatachalam, MD's credentials? ▼
Sridhar Venkatachalam, MD's NPI is 1659509990 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.