NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1952362154 M.D.
Verify on CMS → Joshua Portnoy, M.D.
Internal Medicine Physician in Littleton, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 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
1K
Medicare Part D claims · 197 beneficiaries · Internal Medicine Physician avg: 3K
MIPS score
75/100
▼ 8 pts below national avg 83.1 · Above neutral
Industry payments
$1.1K
51 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Joshua Portnoy, M.D. reported a CMS MIPS final score of 75/100 - below the 83.1 national average - and filed 1,139 Medicare Part D claims in 2023.
- 75/100
- MIPS score · -8 vs avg
- 1K
- Part D claims, 2023
- 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.
Joshua Portnoy, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
75 15th percentile higher than 15% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Joshua Portnoy, M.D. sits
This provider among internal medicine physician peers
Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Joshua Portnoy, M.D. writes more Part D claims than 57% of them and scores higher on MIPS quality than 14% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Joshua Portnoy, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Joshua Portnoy, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 3 hospital affiliations - 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 Joshua Portnoy, M.D.?
Below national averagePrimary specialty
Internal Medicine Physician
Medicare Part D claims
1,139 58% vs specialty avg
MIPS final score
75/100 8.1 pts vs avg
Specialty distribution in Colorado
How Internal Medicine Physician compares to other specialties among Colorado providers
Medicare quality performance, MIPS
Joshua Portnoy, M.D.'s 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 75/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 75/100 vs national avg 83.1
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).
Joshua Portnoy, M.D. appears in the CMS NPPES registry as an Internal Medicine Physician provider holding M.D. credentials at 8210 SOUTHPARK TER, Littleton, CO, 80120, with a listed phone of (720) 914-1000. NPI 1952362154 was issued on 03/29/2006.
Medicare Part D records for calendar year 2023 show 1,139 prescription claims written by this provider, covering 197 Medicare beneficiaries and totaling roughly $403K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75/100 for the 2023 performance year, compared with the national average of 83.1.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 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 | 1952362154 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/29/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
Avg: 83.1
Reporting: Group practice
Hospital and facility affiliations
Facilities where Joshua Portnoy, M.D. 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.
According to CMS billing records, Joshua Portnoy, M.D. is affiliated with 3 Medicare-billing facilities.
Colorado Pulmonary Intensivists PC
Littleton, CO
Critical Care Pulmonary And Sleep Medicine Consultants
Littleton, CO
Internal Medicine Center
Littleton, 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).
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 Joshua Portnoy, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.1K
Largest payer
GENZYME CORPORATION
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,139
Total Claims
$403K
Total Drug Cost
197
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,320
- Total Day Supply
- 66,979
- Generic Drug Cost
- $18K
- Antibiotic Claims
- 20
Patient Demographics
- Average Patient Age
- 75.2 years
- Avg HCC Risk Score
- 1.64
- 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 Joshua Portnoy, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Eliquis
Eliquis
93 claims
- Trelegy Ellipta
Trelegy Ellipta
84 claims
- Stiolto Respimat
Stiolto Respimat
76 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
61 claims
- Anoro Ellipta
Anoro Ellipta
61 claims
- Atorvastatin Calcium
Atorvastatin Calcium
41 claims
- Lisinopril
Lisinopril
38 claims
- Metformin Hcl 33
Metformin Hcl
33 claims
| Drug | Claims |
|---|---|
| Eliquis Apixaban | 93 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 84 |
| Stiolto Respimat Tiotropium Br/Olodaterol Hcl | 76 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 61 |
| Anoro Ellipta Umeclidinium Brm/Vilanterol Tr | 61 |
| Atorvastatin Calcium | 41 |
| Lisinopril | 38 |
| Metformin Hcl | 33 |
| Montelukast Sodium | 32 |
| Zolpidem Tartrate | 29 |
* 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 Joshua Portnoy, M.D. fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Joshua Portnoy, M.D.'s 1,139 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Portnoy.
Dr. Emily Aaron
MD
Denver, CO
Dr. Cynthia Abacan
MD
Pueblo, CO
Dr. David Abbey
MS MD
Fort Collins, CO
Dr. Ahmed Abdulrahman
MD
Pueblo, CO
Dr. Victor Abela
D.O.
Denver, CO
Compare Internal Medicine 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 Colorado medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine 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.
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Frequently Asked Questions
What is Joshua Portnoy, M.D.'s specialty? ▼
Joshua Portnoy, M.D. specializes in Internal Medicine Physician and practices in Littleton, Colorado. Credentials: M.D..
How much does Joshua Portnoy, M.D. prescribe under Medicare Part D? ▼
In 2023, Joshua Portnoy, M.D. wrote 1,139 Medicare Part D claims totaling $403K in drug costs for 197 beneficiaries.
What is Joshua Portnoy, M.D.'s Medicare quality score? ▼
Joshua Portnoy, M.D. has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Joshua Portnoy, M.D. located? ▼
Joshua Portnoy, M.D. is located at 8210 SOUTHPARK TER, Littleton, CO, 80120. Phone: (720) 914-1000.
What is Joshua Portnoy, M.D.'s NPI number? ▼
Joshua Portnoy, M.D.'s National Provider Identifier (NPI) is 1952362154, issued on 03/29/2006.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Joshua Portnoy, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Joshua Portnoy, M.D.'s most frequently prescribed drugs include Eliquis, Trelegy Ellipta, Stiolto Respimat. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joshua Portnoy, M.D. accept Medicare? ▼
Joshua Portnoy, M.D. appears in CMS Medicare data with 1,139 Part D claims and 197 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joshua Portnoy, M.D.'s credentials? ▼
Joshua Portnoy, M.D.'s NPI is 1952362154 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 (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.