PlainDoctor

2026 NPPES data Addiction Medicine (Internal Medicine) Physician NPI 1427412899 M.D. PH.D
Verify on CMS →

Russell Berg, M.D. PH.D

Addiction Medicine (Internal Medicine) Physician in Seattle, Washington.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 553 in Addiction Medicine (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 · 62 beneficiaries · Addiction Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
83%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.1/100
▲ 10 pts above national avg 83.5 · Exceptional
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Russell Berg, M.D. PH.D reported a CMS MIPS final score of 93.1/100 - above the 83.5 national average - and filed 1,256 Medicare Part D claims in 2023.

93.1/100
MIPS score · +10 vs avg
1K
Part D claims, 2023
83%
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.

CMS NPPES provider registry desk

NPI 1427412899 · Addiction Medicine (Internal Medicine) Physician

NPI-10 · ENUM-MID · TAX-NARROW · MIPS-ABOVE · RX-MID · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1427412899
  • ENUM-MID 2016
  • TAX-NARROW 553
  • MIPS-ABOVE 93.1/100
  • RX-MID 1,256
  • BOOK-THIN 10 in Washington
  • PHOTO-FINISH Gary McBride · ±0.4

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Russell Berg, M.D. PH.D's MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

93 ≥ 69th percentile 69% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). Below this entry. 90+: 189,403 measured providers (42%). This entry sits in this band. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Russell Berg, M.D. PH.D sits

This provider among addiction medicine (internal medicine) physician peers

Across the 72 addiction medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Russell Berg, M.D. PH.D writes more Part D claims than 72% of them and scores higher on MIPS quality than 71% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 97Russell Berg, M.D. PH.D, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 71
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one addiction medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is Russell Berg, M.D. PH.D. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Russell Berg, M.D. PH.D 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 Russell Berg, M.D. PH.D?

High performer (top quartile)

NPI registry status

Active

Issued 04/11/2016

NPI 1427412899

Primary specialty

Addiction Medicine (Internal Medicine) Physician

Niche

553 US NPIs in this specialty

Medicare Part D claims

1,256 10% vs specialty avg

2023 prescription claims

Specialty avg: 1,403

MIPS final score

93.1/100 9.6 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in Washington

How Addiction Medicine (Internal Medicine) Physician compares to other specialties among Washington providers

Washington providers
Mental Health Counselor8.6%Massage Therapist6.5%Counselor5.7%Behavior Technician4.5%Pharmacist4%Physical Therapist3.6%Addiction Medicine (Internal…0%
Largest specialties in Washington (% of in-state providers)

Medicare quality performance, MIPS

Russell Berg, M.D. PH.D's 2023 MIPS final score plotted against the Addiction Medicine (Internal Medicine) Physician national average

High performer (top quartile)
MIPS Final Score
93.1/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%93.1%
MIPS final score (Addiction Medicine (Internal Medicine) Physician) - 93.1/100 vs national avg 83.5
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

325 9TH AVE
Seattle, WA 98104
(206) 520-5000

Provider Details

NPI 1427412899
Specialty Addiction Medicine (Internal Medicine) Physician
Credentials M.D. PH.D
Gender Male
NPI Issued 04/11/2016

CMS Quality Score (MIPS)

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

93.0932
Final Score
Measured-score avg: 83.5
73.9573
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Russell Berg, M.D. PH.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.

The Association OF University Physicians
Seattle, WA

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 - Washington WMC 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 ~34K Washington medical licensees in 2023 - they are NOT specific to Russell Berg, M.D. PH.D. To verify Russell Berg, M.D. PH.D's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC 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 Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

Russell Berg, M.D. PH.D - brand share 14.0%
Addiction Medicine (Internal Medicine) Physician average

14% brand-name claims vs 83% generic, on 1,256 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.

1,256
Total Claims
$137K
Total Drug Cost
62
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,648
Total Day Supply
39,876
Brand vs Generic
14% brand / 83% generic
Brand Drug Cost
$115K
Generic Drug Cost
$21K

Patient Demographics

Average Patient Age
61.6 years
Avg HCC Risk Score
2.05
Gender Split
34% female / 66% male
Age Distribution
<65: 29, 65-74: 26, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What Russell Berg, M.D. PH.D prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Gabapentin
 135
Atorvastatin Calcium
 85
Lisinopril
 74
Tamsulosin Hcl
 68
Fluoxetine Hcl
 48
Sertraline Hcl
 46
Trulicity
Dulaglutide
44
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
37
Metformin Hcl Er
Metformin Hcl
34
Jardiance
Empagliflozin
33

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

More Addiction Medicine (Internal Medicine) Physician in WA → All providers in Washington → Compare specialties →

Addiction Medicine (Internal Medicine) Physician Overview

How Russell Berg, M.D. PH.D fits within the Addiction Medicine (Internal Medicine) Physician landscape nationally.

553
Addiction Medicine (Internal Medicine) Physician Providers in US
46
States with Addiction Medicine (Internal Medicine) Physician
1,403
Avg Claims per Provider

Russell Berg, M.D. PH.D's 1,256 claims are below the specialty average of 1,403.

Nationwide Addiction Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Berg, both outside Washington so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (93.1 here).

Gary McBride 92.7 TN Allan Nash 93.5 NC Noel Ilogu 93.7 NJ Adam Brank 92.4 NE

Same NPPES enumeration year (2016)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Bela Roth League City, TX Harithsa Asuri Ashtabula, OH Jasleen Salwan Baltimore, MD Anna Maria South Lexington, KY

Nearby Addiction Medicine (Internal Medicine) Physician Providers in Washington

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

One of 10 Addiction Medicine (Internal Medicine) Physician providers enrolled in Washington, 5 are shown here.

Dr. Elenore Bhatraju
MD
Federal Way, WA
Dr. Jesse Davis
MD
Bellingham, WA
Dr. Kevin Feig
M.D.
Bellingham, WA
Dr. Kevin Fischer
MD
Vancouver, WA
Dr. Nicole Ingrisano
M.D.
Seattle, WA

Compare Addiction Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Russell Berg, M.D. PH.D's specialty? ▼
Russell Berg, M.D. PH.D specializes in Addiction Medicine (Internal Medicine) Physician and practices in Seattle, Washington. Credentials: M.D. PH.D.
How much does Russell Berg, M.D. PH.D prescribe under Medicare Part D? ▼
In 2023, Russell Berg, M.D. PH.D wrote 1,256 Medicare Part D claims totaling $137K in drug costs for 62 beneficiaries.
What is Russell Berg, M.D. PH.D's Medicare quality score? ▼
Russell Berg, M.D. PH.D has a CMS MIPS Final Score of 93.1/100 (Quality: 74). 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 Russell Berg, M.D. PH.D located? ▼
Russell Berg, M.D. PH.D is located at 325 9TH AVE, Seattle, WA, 98104. Phone: (206) 520-5000.
What is Russell Berg, M.D. PH.D's NPI number? ▼
Russell Berg, M.D. PH.D's National Provider Identifier (NPI) is 1427412899, issued on 04/11/2016.
Does Russell Berg, M.D. PH.D prescribe more brand-name or generic drugs? ▼
Russell Berg, M.D. PH.D's prescribing is 14% brand-name and 83% generic drugs by claim count, with $115K in brand drug costs.
How many Addiction Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 553 Addiction Medicine (Internal Medicine) Physician providers across 46 states in the US. The average Addiction Medicine (Internal Medicine) Physician provider writes 1,403 Medicare Part D claims per year.
What drugs does Russell Berg, M.D. PH.D prescribe most often? ▼
Based on 2023 Medicare Part D data, Russell Berg, M.D. PH.D's most frequently prescribed drugs include Gabapentin, Atorvastatin Calcium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Russell Berg, M.D. PH.D accept Medicare? ▼
Russell Berg, M.D. PH.D appears in CMS Medicare data with 1,256 Part D claims and 62 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Russell Berg, M.D. PH.D's credentials? ▼
Russell Berg, M.D. PH.D's NPI is 1427412899 with credentials M.D. PH.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

Compiled from official public sources by the editorial process.

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.