2026 NPPES data Gastroenterology Physician NPI 1578524377 M D
Verify on CMS →

Joseph Black, M D

Gastroenterology Physician in Roseburg, Oregon. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 16,567 in Gastroenterology 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
563
Medicare Part D claims · 316 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Joseph Black, M D filed 563 Medicare Part D claims in 2023 as a Gastroenterology Physician in Roseburg, Oregon, prescribing 80% generic.

563
Part D claims, 2023
80%
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.

Joseph Black, M D's Medicare Part D volume vs every U.S. prescriber

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

563 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)

Joseph Black, 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 Joseph Black, M D?

Quality data not reported

NPI registry status

Active

Issued 03/31/2006

NPI 1578524377

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

563 32% vs specialty avg

2023 prescription claims

Specialty avg: 833

Specialty distribution in Oregon

How Gastroenterology Physician compares to other specialties among Oregon providers

Oregon providers

Largest specialties in Oregon (% of in-state providers)

Mental Health Counselor — 12.1%Mental Health Counselor12.1%Massage Therapist — 4.8%Massage Therapist4.8%Counselor — 3.9%Counselor3.9%Addiction (Substance Use Disorder) Counselor — 3.5%Addiction (Substance Use Disorder) Counselor3.5%Case Manager/Care Coordinator — 3.4%Case Manager/Care Coordinator3.4%Clinical Social Worker — 3.3%Clinical Social Worker3.3%Gastroenterology Physician — 0.2%Gastroenterology Physician0.2%
Largest specialties in Oregon (% of in-state providers)

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Gastroenterology 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).

Joseph Black, M D appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M D credentials at 2550 NW EDENBOWER BLVD, Roseburg, OR, 97471, with a listed phone of (541) 580-5328. NPI 1578524377 was issued on 03/31/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Black 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 563 prescription claims written by this provider, covering 316 Medicare beneficiaries and totaling roughly $31K in drug spend, split 20% brand-name and 80% generic by claim count. 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.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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

2550 NW EDENBOWER BLVD
Roseburg, OR 97471

Provider Details

NPI 1578524377
Specialty Gastroenterology Physician
Credentials M D
Gender Male
NPI Issued 03/31/2006

Brand vs generic prescribing mix · Typical

Joseph Black, M D — brand share 20.0%
Gastroenterology Physician average

20% brand-name claims vs 80% generic, on 563 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.

563
Total Claims
$31K
Total Drug Cost
316
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
668
Total Day Supply
11,374
Brand vs Generic
20% brand / 80% generic
Brand Drug Cost
$7K
Generic Drug Cost
$24K

Patient Demographics

Average Patient Age
70.0 years
Avg HCC Risk Score
1.14
Gender Split
52% female / 48% male
Age Distribution
<65: 50, 65-74: 178, 75-84: 77, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

What Joseph Black, 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
Peg 3350-Electrolyte
Sodium Chloride/Nahco3/Kcl/Peg
218
Omeprazole
95
Famotidine
52
Pantoprazole Sodium
33
Esomeprazole Magnesium
19
Mesalamine
16
Ondansetron Hcl
14
Mesalamine Dr
Mesalamine
13
Prednisone
12
Ondansetron Odt
Ondansetron
11

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

Gastroenterology Physician Overview

How Joseph Black, M D fits within the Gastroenterology Physician landscape nationally.

16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider

Joseph Black, M D's 563 claims are below the specialty average of 833.

Nearby Gastroenterology Physician Providers in Oregon

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

Compare Gastroenterology 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 Gastroenterology 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 Joseph Black, M D's specialty?
Joseph Black, M D specializes in Gastroenterology Physician and practices in Roseburg, Oregon. Credentials: M D.
How much does Joseph Black, M D prescribe under Medicare Part D?
In 2023, Joseph Black, M D wrote 563 Medicare Part D claims totaling $31K in drug costs for 316 beneficiaries.
Where is Joseph Black, M D located?
Joseph Black, M D is located at 2550 NW EDENBOWER BLVD, Roseburg, OR, 97471. Phone: (541) 580-5328.
What is Joseph Black, M D's NPI number?
Joseph Black, M D's National Provider Identifier (NPI) is 1578524377, issued on 03/31/2006.
Does Joseph Black, M D prescribe more brand-name or generic drugs?
Joseph Black, M D's prescribing is 20% brand-name and 80% generic drugs by claim count, with $7K in brand drug costs.
How many Gastroenterology Physician providers are there in the US?
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does Joseph Black, M D prescribe most often?
Based on 2023 Medicare Part D data, Joseph Black, M D's most frequently prescribed drugs include Peg 3350-Electrolyte, Omeprazole, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joseph Black, M D accept Medicare?
Joseph Black, M D appears in CMS Medicare data with 563 Part D claims and 316 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joseph Black, M D's credentials?
Joseph Black, M D's NPI is 1578524377 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

Compiled from official public sources by the PlainDoctor editorial team.