2026 NPPES data Nephrology Physician NPI 1184899981 MD, MS
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ISAAC HALL, MD, MS

Nephrology Physician in DURANGO, Colorado. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
522
Medicare Part D claims · 156 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
92.0664/100
▲ 9 pts above national avg 83.1 · [object Object]
What the federal data reveals: ISAAC HALL, MD, MS is a Nephrology Physician ([object Object]) practicing in DURANGO, Colorado with a Medicare Part D prescribing footprint of 522 claims across 156 beneficiaries — 8% brand-name prescribing . Their CMS MIPS Final Score of 92.0664/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: ISAAC HALL, MD, MS reported a CMS MIPS final score of 92.0664 out of 100, above the 83.1 national average, and filed 522 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ISAAC HALL, MD, MS 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).

ISAAC HALL, MD, MS at a glance

High performer (top quartile)

NPI registry status

Active

Issued 04/23/2008

NPI 1184899981

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

522 64% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

MIPS final score

92.0664/100 8.966400000000007% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Colorado

How Nephrology Physician compares to other specialties among Colorado providers

Colorado providers

Nephrology Physician share within Colorado

1. Nephrology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nephrology Physician share within Colorado

Medicare quality performance — MIPS

ISAAC HALL, MD, MS's 2023 MIPS final score plotted against the Nephrology Physician national average

High performer (top quartile)
MIPS Final Score
92.0664/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nephrology Physician) — 92.0664/100 vs national avg 83.1

0%100%National avg83%92.1%
MIPS final score (Nephrology Physician) — 92.0664/100 vs national avg 83.1

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).

ISAAC HALL, MD, MS is a Nephrology Physician provider practicing in DURANGO, Colorado, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD, MS. NPI: 1184899981. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

ISAAC HALL, MD, MS appears in the CMS NPPES registry as a Nephrology Physician provider holding MD, MS credentials at 1010 THREE SPRINGS BLVD STE 255, DURANGO, CO, 81301, with a listed phone of (970) 764-3825. NPI 1184899981 was issued on 04/23/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HALL most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 522 prescription claims written by this provider, covering 156 Medicare beneficiaries and totaling roughly $62K in drug spend, split 8% brand-name and 92% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 92.0664/100 for the 2023 performance year (Quality 85.5753), compared with the national average of 83.1.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 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

1010 THREE SPRINGS BLVD STE 255
DURANGO, CO 81301

Provider Details

NPI 1184899981
Specialty Nephrology Physician
Credentials MD, MS
Gender Male
NPI Issued 04/23/2008

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

92.0664
Final Score
Avg: 83.1
85.5753
Quality
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where ISAAC HALL, MD, MS 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.

CATHOLIC HEALTH INITIATIVES COLORADO
DURANGO, CO

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Generic-heavy

ISAAC HALL, MD, MS — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 522 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.

522
Total Claims
$62K
Total Drug Cost
156
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
850
Total Day Supply
24,489
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$24K
Generic Drug Cost
$37K
Antibiotic Claims
38

Patient Demographics

Average Patient Age
54.0 years
Avg HCC Risk Score
5.44
Gender Split
45% female / 55% male
Age Distribution
<65: 105, 65-74: 39, 75-84: 12, 85+: 0

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Prednisone
50
Amlodipine Besylate
46
Atorvastatin Calcium
40
Famotidine
31
Carvedilol
28
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
26
Lisinopril
21
Valganciclovir Hcl
19
Chlorthalidone
14
Omeprazole
14

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Nephrology Physician Overview

How ISAAC HALL, MD, MS fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

ISAAC HALL, MD, MS's 522 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in Colorado

Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as HALL.

Compare Nephrology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ISAAC HALL, MD, MS's specialty?
ISAAC HALL, MD, MS specializes in Nephrology Physician and practices in DURANGO, Colorado. Credentials: MD, MS.
How much does ISAAC HALL, MD, MS prescribe under Medicare Part D?
In 2023, ISAAC HALL, MD, MS wrote 522 Medicare Part D claims totaling $62K in drug costs for 156 beneficiaries.
What is ISAAC HALL, MD, MS's Medicare quality score?
ISAAC HALL, MD, MS has a CMS MIPS Final Score of 92.0664/100 (Quality: 85.5753). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ISAAC HALL, MD, MS located?
ISAAC HALL, MD, MS is located at 1010 THREE SPRINGS BLVD STE 255, DURANGO, CO, 81301. Phone: (970) 764-3825.
What is ISAAC HALL, MD, MS's NPI number?
ISAAC HALL, MD, MS's National Provider Identifier (NPI) is 1184899981, issued on 04/23/2008.
Does ISAAC HALL, MD, MS prescribe more brand-name or generic drugs?
ISAAC HALL, MD, MS's prescribing is 8% brand-name and 92% generic drugs by claim count, with $24K in brand drug costs.
How many Nephrology Physician providers are there in the US?
There are 10,534 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 ISAAC HALL, MD, MS prescribe most often?
Based on 2023 Medicare Part D data, ISAAC HALL, MD, MS's most frequently prescribed drugs include Prednisone, Amlodipine Besylate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ISAAC HALL, MD, MS accept Medicare?
ISAAC HALL, MD, MS appears in CMS Medicare data with 522 Part D claims and 156 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ISAAC HALL, MD, MS's credentials?
ISAAC HALL, MD, MS's NPI is 1184899981 with credentials MD, MS. 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

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