2026 NPPES data Internal Medicine Physician NPI 1336190875 M.D.
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Edward Wolf, M.D.

Internal Medicine Physician in Corvallis, 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
12K
Medicare Part D claims · 773 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

Edward Wolf, M.D. filed 12,180 Medicare Part D claims in 2023 as a Internal Medicine Physician in Corvallis, Oregon, prescribing 91% generic.

12K
Part D claims, 2023
91%
generic prescribing

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.

Edward Wolf, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

12,180 Top 2% higher than 98% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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)

Edward Wolf, M.D. 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 Edward Wolf, M.D.?

Quality data not reported

NPI registry status

Active

Issued 05/12/2006

NPI 1336190875

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

12,180 348% 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).

Edward Wolf, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 3680 NW SAMARITAN DR, Corvallis, OR, 97330, with a listed phone of (541) 754-1150. NPI 1336190875 was issued on 05/12/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Wolf 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 12,180 prescription claims written by this provider, covering 773 Medicare beneficiaries and totaling roughly $776K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 2.6%. 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

3680 NW SAMARITAN DR
Corvallis, OR 97330

Provider Details

NPI 1336190875
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 05/12/2006

Brand vs generic prescribing mix · Generic-heavy

Edward Wolf, M.D. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 12,180 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.

12,180
Total Claims
$776K
Total Drug Cost
773
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
25,200
Total Day Supply
739,878
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$539K
Generic Drug Cost
$234K
Opioid Claims
316 (2.6% rate)
Antibiotic Claims
138

Patient Demographics

Average Patient Age
77.8 years
Avg HCC Risk Score
1.01
Gender Split
45% female / 55% male
Age Distribution
<65: 19, 65-74: 268, 75-84: 326, 85+: 160

Top Prescribed Drugs (Medicare Part D)

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

What Edward Wolf, M.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
Atorvastatin Calcium
788
Levothyroxine Sodium
675
Losartan Potassium
654
Metoprolol Succinate
590
Amlodipine Besylate
548
Gabapentin
346
Simvastatin
327
Eliquis
Apixaban
321
Tamsulosin Hcl
289
Pantoprazole Sodium
259

* 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 Edward Wolf, M.D. 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

Edward Wolf, M.D.'s 12,180 claims are above 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 Wolf.

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 Oregon 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.

Frequently Asked Questions

What is Edward Wolf, M.D.'s specialty?
Edward Wolf, M.D. specializes in Internal Medicine Physician and practices in Corvallis, Oregon. Credentials: M.D..
How much does Edward Wolf, M.D. prescribe under Medicare Part D?
In 2023, Edward Wolf, M.D. wrote 12,180 Medicare Part D claims totaling $776K in drug costs for 773 beneficiaries.
Where is Edward Wolf, M.D. located?
Edward Wolf, M.D. is located at 3680 NW SAMARITAN DR, Corvallis, OR, 97330. Phone: (541) 754-1150.
What is Edward Wolf, M.D.'s NPI number?
Edward Wolf, M.D.'s National Provider Identifier (NPI) is 1336190875, issued on 05/12/2006.
Does Edward Wolf, M.D. prescribe more brand-name or generic drugs?
Edward Wolf, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $539K in brand drug costs.
Does Edward Wolf, M.D. prescribe opioids?
Yes, Edward Wolf, M.D. had 316 opioid claims in 2023 with an opioid prescribing rate of 2.6%.
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 Edward Wolf, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Edward Wolf, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Edward Wolf, M.D. accept Medicare?
Edward Wolf, M.D. appears in CMS Medicare data with 12,180 Part D claims and 773 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Edward Wolf, M.D.'s credentials?
Edward Wolf, M.D.'s NPI is 1336190875 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

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