NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1821592908 MD
Verify on CMS → Eric Anderson, MD
Internal Medicine Physician in Scottsdale, Arizona.
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
339
Medicare Part D claims · 168 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
89%
generic claims · 11% 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
Eric Anderson, MD carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 339 Medicare Part D claims in 2023.
- 75/100
- CMS neutral score · not measured
- 339
- Part D claims, 2023
- 89%
- 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.
Eric Anderson, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
339 ≥ 57th percentile 57% 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)
Eric Anderson, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 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 Eric Anderson, MD?
CMS neutral score, not measuredPrimary specialty
Internal Medicine Physician
Medicare Part D claims
339 88% vs specialty avg
MIPS final score
75/100
Specialty distribution in Arizona
How Internal Medicine Physician compares to other specialties among Arizona 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).
Eric Anderson, MD appears in the CMS NPPES registry as an Internal Medicine Physician provider holding MD credentials at 13400 E SHEA BLVD, Scottsdale, AZ, 85259, with a listed phone of (480) 301-8000. NPI 1821592908 was issued on 03/22/2018.
Medicare Part D records for calendar year 2023 show 339 prescription claims written by this provider, covering 168 Medicare beneficiaries and totaling roughly $22K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 14.5%. 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.
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 | 1821592908 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/22/2018 |
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: Group practice
Hospital and facility affiliations
Facilities where Eric Anderson, 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.
Affiliated Hospitalists PLC
Phoenix, AZ
Mayo Clinic Arizona
Scottsdale, AZ
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 · Typical
Eric Anderson, MD - brand share 11.0%
Internal Medicine Physician average
11% brand-name claims vs 89% generic, on 339 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.
339
Total Claims
$22K
Total Drug Cost
168
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 383
- Total Day Supply
- 7,724
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $17K
- Generic Drug Cost
- $5K
- Opioid Claims
- 49 (14.5% rate)
- Antibiotic Claims
- 50
Patient Demographics
- Average Patient Age
- 73.3 years
- Avg HCC Risk Score
- 2.63
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 27, 65-74: 66, 75-84: 45, 85+: 30
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Eric Anderson, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Oxycodone Hcl
Oxycodone Hcl
36 claims
- Naloxone Hcl 13
Naloxone Hcl
13 claims
- Prednisone 13
Prednisone
13 claims
- Cefdinir 12
Cefdinir
12 claims
- Cyclobenzaprine Hcl 11
Cyclobenzaprine Hcl
11 claims
- Furosemide 11
Furosemide
11 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 36 |
| Naloxone Hcl | 13 |
| Prednisone | 13 |
| Cefdinir | 12 |
| Cyclobenzaprine Hcl | 11 |
| Furosemide | 11 |
* 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 Eric Anderson, MD 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
Eric Anderson, MD's 339 claims are below the specialty average of 2,716.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Anderson, both outside Arizona so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (75 here).
Same NPPES enumeration year (2018)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Anderson.
One of 3,374 Internal Medicine Physician providers enrolled in Arizona, 5 are shown here.
Dr. Daniel Aaronson
MD
Tucson, AZ
Dr. Jaber Abawi
MD
Payson, AZ
Dr. Demsas Abay
MD
Peoria, AZ
Dr. Firas Abbas
M.D. M.P.H.
Mesa, AZ
Dr. Hassan Abbas
D.O.
Mesa, AZ
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 Arizona 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 Eric Anderson, MD's specialty? ▼
Eric Anderson, MD specializes in Internal Medicine Physician and practices in Scottsdale, Arizona. Credentials: MD.
How much does Eric Anderson, MD prescribe under Medicare Part D? ▼
In 2023, Eric Anderson, MD wrote 339 Medicare Part D claims totaling $22K in drug costs for 168 beneficiaries.
What is Eric Anderson, MD's Medicare quality score? ▼
Eric Anderson, 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 Eric Anderson, MD located? ▼
Eric Anderson, MD is located at 13400 E SHEA BLVD, Scottsdale, AZ, 85259. Phone: (480) 301-8000.
What is Eric Anderson, MD's NPI number? ▼
Eric Anderson, MD's National Provider Identifier (NPI) is 1821592908, issued on 03/22/2018.
Does Eric Anderson, MD prescribe more brand-name or generic drugs? ▼
Eric Anderson, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $17K in brand drug costs.
Does Eric Anderson, MD prescribe opioids? ▼
Yes, Eric Anderson, MD had 49 opioid claims in 2023 with an opioid prescribing rate of 14.5%.
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 Eric Anderson, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Eric Anderson, MD's most frequently prescribed drugs include Oxycodone Hcl, Naloxone Hcl, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Eric Anderson, MD accept Medicare? ▼
Eric Anderson, MD appears in CMS Medicare data with 339 Part D claims and 168 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eric Anderson, MD's credentials? ▼
Eric Anderson, MD's NPI is 1821592908 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.