2026 NPPES data Internal Medicine Physician NPI 1306959580 MD
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MAXINE DEXTER, MD

Internal Medicine Physician in CLACKAMAS, Oregon. 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
537
Medicare Part D claims · 85 beneficiaries · Internal Medicine Physician avg: 3K

What the federal data shows

MAXINE DEXTER, MD filed 537 Medicare Part D claims in 2023 as a Internal Medicine Physician in CLACKAMAS, Oregon.

537
Part D claims, 2023

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.

MAXINE DEXTER, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

537 Top 34% higher than 66% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

MAXINE DEXTER, MD 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 MAXINE DEXTER, MD?

Quality data not reported

NPI registry status

Active

Issued 08/15/2006

NPI 1306959580

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

537 80% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Oregon

How Internal Medicine Physician compares to other specialties among Oregon providers

Oregon providers

Internal Medicine Physician share within Oregon

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

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

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).

MAXINE DEXTER, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 10180 SE SUNNYSIDE RD, CLACKAMAS, OR, 97015, with a listed phone of (503) 571-8318. NPI 1306959580 was issued on 08/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DEXTER 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 537 prescription claims written by this provider, covering 85 Medicare beneficiaries and totaling roughly $133K in drug spend. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 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

10180 SE SUNNYSIDE RD
CLACKAMAS, OR 97015

Provider Details

NPI 1306959580
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 08/15/2006

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

537
Total Claims
$133K
Total Drug Cost
85
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
989
Total Day Supply
29,013
Generic Drug Cost
$56K
Antibiotic Claims
19

Patient Demographics

Average Patient Age
73.5 years
Avg HCC Risk Score
1.70
Gender Split
71% female / 29% male

Top Prescribed Drugs (Medicare Part D)

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

What MAXINE DEXTER, MD 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
Albuterol Sulfate Hfa
Albuterol Sulfate
69
Alvesco
Ciclesonide
66
Ambrisentan
62
Spiriva Respimat
Tiotropium Bromide
50
Wixela Inhub
Fluticasone Propion/Salmeterol
40
Tadalafil
35
Bosentan
33
Stiolto Respimat
Tiotropium Br/Olodaterol Hcl
15
Pantoprazole Sodium
14
Azithromycin
12

* 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 MAXINE DEXTER, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

MAXINE DEXTER, MD's 537 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Oregon

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

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

Frequently Asked Questions

What is MAXINE DEXTER, MD's specialty?
MAXINE DEXTER, MD specializes in Internal Medicine Physician and practices in CLACKAMAS, Oregon. Credentials: MD.
How much does MAXINE DEXTER, MD prescribe under Medicare Part D?
In 2023, MAXINE DEXTER, MD wrote 537 Medicare Part D claims totaling $133K in drug costs for 85 beneficiaries.
Where is MAXINE DEXTER, MD located?
MAXINE DEXTER, MD is located at 10180 SE SUNNYSIDE RD, CLACKAMAS, OR, 97015. Phone: (503) 571-8318.
What is MAXINE DEXTER, MD's NPI number?
MAXINE DEXTER, MD's National Provider Identifier (NPI) is 1306959580, issued on 08/15/2006.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 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 MAXINE DEXTER, MD prescribe most often?
Based on 2023 Medicare Part D data, MAXINE DEXTER, MD's most frequently prescribed drugs include Albuterol Sulfate Hfa, Alvesco, Ambrisentan. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MAXINE DEXTER, MD accept Medicare?
MAXINE DEXTER, MD appears in CMS Medicare data with 537 Part D claims and 85 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MAXINE DEXTER, MD's credentials?
MAXINE DEXTER, MD's NPI is 1306959580 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

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.
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