NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1164602835 MD
Verify on CMS → Stephen Wells, MD
Nephrology Physician in Cedar Park, 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 10,569 in Nephrology 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
731
Medicare Part D claims · 135 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Stephen Wells, MD carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 731 Medicare Part D claims in 2023.
- 75/100
- CMS neutral score · not measured
- 731
- Part D claims, 2023
- 91%
- 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.
Stephen Wells, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
731 ≥ 71st percentile 71% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Stephen Wells, 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 Stephen Wells, MD?
CMS neutral score, not measuredPrimary specialty
Nephrology Physician
Medicare Part D claims
731 50% vs specialty avg
MIPS final score
75/100
Specialty distribution in Texas
How Nephrology Physician compares to other specialties among Texas providers
MIPS score not measured
CMS assigned a neutral 75/100 threshold
CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.
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).
Stephen Wells, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 1720 E WHITESTONE BLVD STE A, Cedar Park, TX, 78613, with a listed phone of (512) 451-5800. NPI 1164602835 was issued on 11/09/2007.
Medicare Part D records for calendar year 2023 show 731 prescription claims written by this provider, covering 135 Medicare beneficiaries and totaling roughly $36K in drug spend, split 9% brand-name and 91% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider carries a Final Score of 75/100 for the 2023 performance year, but CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score: this is the neutral performance threshold CMS assigns where nothing was scored, so it is not comparable with clinicians whose score was measured.
Nephrology Physician is a mid-sized specialty nationwide, with 10,569 enrolled providers across 55 states and an average of 1,454 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1164602835 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/09/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
CMS neutral threshold · not measured
Reporting: Individual
Hospital and facility affiliations
Facilities where Stephen Wells, 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.
Austin Kidney Associates PA
Cedar Park, 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).
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 Stephen Wells, MD. To verify Stephen Wells, 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 · Generic-heavy
Stephen Wells, MD - brand share 9.0%
Nephrology Physician average
9% brand-name claims vs 91% generic, on 731 2023 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 2023.
731
Total Claims
$36K
Total Drug Cost
135
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,512
- Total Day Supply
- 43,736
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $18K
- Generic Drug Cost
- $19K
- Antibiotic Claims
- 20
Patient Demographics
- Average Patient Age
- 70.4 years
- Avg HCC Risk Score
- 4.12
- Gender Split
- 54% female / 46% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Stephen Wells, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Furosemide
Furosemide
65 claims
- Losartan Potassium
Losartan Potassium
50 claims
- Sevelamer Carbonate
Sevelamer Carbonate
50 claims
- Amlodipine Besylate
Amlodipine Besylate
42 claims
- Carvedilol
Carvedilol
42 claims
- Allopurinol
Allopurinol
41 claims
- Calcitriol
Calcitriol
35 claims
- Lisinopril
Lisinopril
30 claims
| Drug | Claims |
|---|---|
| Furosemide | 65 |
| Losartan Potassium | 50 |
| Sevelamer Carbonate | 50 |
| Amlodipine Besylate | 42 |
| Carvedilol | 42 |
| Allopurinol | 41 |
| Calcitriol | 35 |
| Lisinopril | 30 |
| Prosol Parenteral Amino Acid 20% No.1 | 28 |
| Clonidine Hcl | 20 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Stephen Wells, MD fits within the Nephrology Physician landscape nationally.
10,569
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Stephen Wells, MD's 731 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Wells.
Dr. Bernardino Abaya
M.D.
Houston, TX
Dr. Aisha Abbasi
MD
Conroe, TX
Dr. Fadi Abouzahr
MD
San Antonio, TX
Dr. Koshy Abraham
MD
Fort Worth, TX
Dr. Ala Abudayyeh
MD
Houston, TX
Compare Nephrology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Texas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nephrology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Texas
Frequently Asked Questions
What is Stephen Wells, MD's specialty? ▼
Stephen Wells, MD specializes in Nephrology Physician and practices in Cedar Park, Texas. Credentials: MD.
How much does Stephen Wells, MD prescribe under Medicare Part D? ▼
In 2023, Stephen Wells, MD wrote 731 Medicare Part D claims totaling $36K in drug costs for 135 beneficiaries.
What is Stephen Wells, MD's Medicare quality score? ▼
Stephen Wells, MD has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. 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 Stephen Wells, MD located? ▼
Stephen Wells, MD is located at 1720 E WHITESTONE BLVD STE A, Cedar Park, TX, 78613. Phone: (512) 451-5800.
What is Stephen Wells, MD's NPI number? ▼
Stephen Wells, MD's National Provider Identifier (NPI) is 1164602835, issued on 11/09/2007.
Does Stephen Wells, MD prescribe more brand-name or generic drugs? ▼
Stephen Wells, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $18K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,569 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does Stephen Wells, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Stephen Wells, MD's most frequently prescribed drugs include Furosemide, Losartan Potassium, Sevelamer Carbonate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephen Wells, MD accept Medicare? ▼
Stephen Wells, MD appears in CMS Medicare data with 731 Part D claims and 135 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephen Wells, MD's credentials? ▼
Stephen Wells, MD's NPI is 1164602835 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 (2023). 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 April 2026 (NPPES) / 2023 (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 May 2026.