NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1841412855 M.D.
Verify on CMS → Dar Shah, M.D.
Nephrology Physician in Fort Worth, 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 10,806 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
622
Medicare Part D claims · 137 beneficiaries · Nephrology Physician avg: 2K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Dar Shah, M.D. filed 622 Medicare Part D claims in 2024 as a Nephrology Physician in Fort Worth, Texas, prescribing 89% generic.
- 622
- Part D claims, 2024
- 89%
- generic prescribing
- ≥68th
- pct by Part D claim volume (lower-bound band)
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 Dar Shah, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1841412855), first enumerated 05/02/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 622 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
Texas statewide board action statistics are published annually — these figures describe aggregate state activity, not Dar Shah, M.D.'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 1841412855 · Nephrology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1841412855
- ENUM-MID 2007
- TAX-MID 11K Nephrology Physician
- RX-LIGHT 622
- BOOK-LIGHT 896 in Texas
- PHOTO-ENUM Serge Balmir, D.O. · 2007
Dar Shah, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
622 ≥ 68th percentile 68% of 1,416,883 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 · 2024
◑
Board-eligible specialty (heuristic, not verified)
Dar Shah, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Dar Shah, M.D.?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
622 59% vs specialty avg
Specialty distribution in Texas
How Nephrology Physician compares to other specialties among Texas providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Nephrology Physician. Verify directly:
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 | 1841412855 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/02/2007 |
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 Dar Shah, M.D.. To verify Dar Shah, M.D.'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
Dar Shah, M.D. - brand share 11.0%
Nephrology Physician average
11% brand-name claims vs 89% generic, on 622 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.
622
Total Claims
$104K
Total Drug Cost
137
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,398.633
- Total Day Supply
- 41,525
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $88K
- Generic Drug Cost
- $16K
Patient Demographics
- Average Patient Age
- 73.9 years
- Avg HCC Risk Score
- 4.14
- Gender Split
- 42% female / 58% male
- Age Distribution
- <65: 14, 65-74: 57, 75-84: 50, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Dar Shah, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Furosemide
Furosemide
41 claims
- Losartan Potassium
Losartan Potassium
40 claims
- Lisinopril
Lisinopril
38 claims
- Sevelamer Carbonate
Sevelamer Carbonate
35 claims
- Hydralazine Hcl
Hydralazine Hcl
34 claims
- Calcitriol
Calcitriol
30 claims
- Farxiga
Farxiga
29 claims
- Amlodipine Besylate
Amlodipine Besylate
28 claims
| Drug | Claims |
|---|---|
| Furosemide | 41 |
| Losartan Potassium | 40 |
| Lisinopril | 38 |
| Sevelamer Carbonate | 35 |
| Hydralazine Hcl | 34 |
| Calcitriol | 30 |
| Farxiga Dapagliflozin Propanediol | 29 |
| Amlodipine Besylate | 28 |
| Doxazosin Mesylate | 25 |
| Jardiance Empagliflozin | 19 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Dar Shah, M.D. fits within the Nephrology Physician landscape nationally.
10,806
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,511
Avg Claims per Provider
Dar Shah, M.D.'s 622 claims are below the specialty average of 1,511.
Nationwide Nephrology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Shah, both outside Texas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nephrology Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Shah.
One of 896 Nephrology Physician providers enrolled in Texas, 5 are shown here.
Dr. Bernardino Abaya
M.D.
Houston, TX
Dr. Aisha Abbasi
MD
Conroe, TX
Dr. Mohammed Abdulaziz
MD
Laredo, TX
Dr. Mai Abouelsaad
M.D.
Houston, TX
Dr. Fadi Abouzahr
MD
San Antonio, TX
Compare Nephrology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Dar Shah, M.D.'s specialty? ▼
Dar Shah, M.D. specializes in Nephrology Physician and practices in Fort Worth, Texas. Credentials: M.D..
How much does Dar Shah, M.D. prescribe under Medicare Part D? ▼
In 2024, Dar Shah, M.D. wrote 622 Medicare Part D claims totaling $104K in drug costs for 137 beneficiaries.
Where is Dar Shah, M.D. located? ▼
Dar Shah, M.D. is located at 800 8TH AVENUE, Fort Worth, TX, 76104. Phone: (817) 810-9800.
What is Dar Shah, M.D.'s NPI number? ▼
Dar Shah, M.D.'s National Provider Identifier (NPI) is 1841412855, issued on 05/02/2007.
Does Dar Shah, M.D. prescribe more brand-name or generic drugs? ▼
Dar Shah, M.D.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $88K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,806 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,511 Medicare Part D claims per year.
What drugs does Dar Shah, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Dar Shah, M.D.'s most frequently prescribed drugs include Furosemide, Losartan Potassium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dar Shah, M.D. accept Medicare? ▼
Dar Shah, M.D. appears in CMS Medicare data with 622 Part D claims and 137 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dar Shah, M.D.'s credentials? ▼
Dar Shah, M.D.'s NPI is 1841412855 with credentials M.D.. 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.
- 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.