NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1801018122 MD
Verify on CMS → Katherine Black, MD
Gastroenterology Physician in Portland, 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 17,061 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
1K
Medicare Part D claims · 439 beneficiaries · Gastroenterology Physician avg: 848
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
84.6/100
▲ 1 pts above national avg 83.5 · Above neutral
Industry payments
$149.54
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Katherine Black, MD reported a CMS MIPS final score of 84.6/100 - above the 83.5 national average - and filed 1,000 Medicare Part D claims in 2024.
- 84.6/100
- MIPS score · +1 vs avg
- 1K
- Part D claims, 2024
- 76%
- 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.
Federal trust snapshot
What official records show about Katherine Black, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1801018122), first enumerated 05/03/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,000 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 84.6/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$149.54 in reported industry payments (2 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1801018122 · Gastroenterology Physician
NPI-10 · ENUM-MID · TAX-MID · MIPS-INLINE · RX-MID · BOOK-THIN · PHOTO-FINISH
- NPI-10 1801018122
- ENUM-MID 2007
- TAX-MID 17K Gastroenterology Physician
- MIPS-INLINE 84.6/100
- RX-MID 1,000
- BOOK-THIN 225 in Oregon
- PHOTO-FINISH Rotimi Ayoola · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Black · this pro…
Black · this provider
84.6 MIPS pts
- Llewellyn Kitchi…
Llewellyn Kitchin
84.6 MIPS pts
- Amine Hila · near
Amine Hila
84.6 MIPS pts
- Somprak Boonpong…
Somprak Boonpongmanee
84.6 MIPS pts
- Rotimi Ayoola · …
Rotimi Ayoola
84.6 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Katherine Black, MD'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.
85 ≥ 42nd percentile 42% of 454,083 measured providers are in lower value bands
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 Katherine Black, MD sits
This provider among gastroenterology physician peers
Across the 5,560 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Katherine Black, MD writes more Part D claims than 63% of them and scores higher on MIPS quality than 48% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one gastroenterology physician peer from a representative sample of 60; the gold marker is Katherine Black, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Katherine Black, MD 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 Katherine Black, MD?
Near national averagePrimary specialty
Gastroenterology Physician
Medicare Part D claims
1,000 18% vs specialty avg
MIPS final score
84.6/100 1.1 pts vs avg
Specialty distribution in Oregon
How Gastroenterology Physician compares to other specialties among Oregon providers
Medicare quality performance, MIPS
Katherine Black, MD's 2023 MIPS final score plotted against the Gastroenterology Physician national average
- MIPS Final Score
- 84.6/100
- vs 83.5 national avg · 2023 performance year
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
Provider Details
| NPI | 1801018122 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/03/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
84.623
Final Score
Measured-score avg: 83.5
94.8303
Quality
53.913
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Katherine Black, 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.
Northwest Gastroenterology Clinic LLC
Portland, OR
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Katherine Black, MD. Source: openpaymentsdata.cms.gov.
Total received
$150
Largest payer
ABBVIE INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
Katherine Black, MD - brand share 24.0%
Gastroenterology Physician average
24% brand-name claims vs 76% generic, on 1,000 2024 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 2024.
1,000
Total Claims
$671K
Total Drug Cost
439
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,838.367
- Total Day Supply
- 45,845
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $632K
- Generic Drug Cost
- $38K
- Opioid Claims
- 13 (1.3% rate)
- Antibiotic Claims
- 46
Patient Demographics
- Average Patient Age
- 72.2 years
- Avg HCC Risk Score
- 1.09
- Gender Split
- 75% female / 25% male
- Age Distribution
- <65: 36, 65-74: 226, 75-84: 163, 85+: 14
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Katherine Black, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Omeprazole
Omeprazole
167 claims
- Peg 3350-Electrolyte
Peg 3350-Electrolyte
139 claims
- Sod Sulf-Potass Su…
Sod Sulf-Potass Sulf-Mag Sulf
103 claims
- Pantoprazole Sodium
Pantoprazole Sodium
87 claims
- Famotidine 44
Famotidine
44 claims
- Ondansetron Odt 35
Ondansetron Odt
35 claims
- Mesalamine Er 30
Mesalamine Er
30 claims
- Mesalamine 24
Mesalamine
24 claims
| Drug | Claims |
|---|---|
| Omeprazole | 167 |
| Peg 3350-Electrolyte Sodium Chloride/Nahco3/Kcl/Peg | 139 |
| Sod Sulf-Potass Sulf-Mag Sulf Sodium, Potassium,mag Sulfates | 103 |
| Pantoprazole Sodium | 87 |
| Famotidine | 44 |
| Ondansetron Odt Ondansetron | 35 |
| Mesalamine Er Mesalamine | 30 |
| Mesalamine | 24 |
| Linzess Linaclotide | 23 |
| Xifaxan Rifaximin | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Katherine Black, MD fits within the Gastroenterology Physician landscape nationally.
17,061
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
848
Avg Claims per Provider
Katherine Black, MD's 1,000 claims are above the specialty average of 848.
Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Black, both outside Oregon so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (84.6 here).
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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.
One of 225 Gastroenterology Physician providers enrolled in Oregon, 5 are shown here.
Dr. Peter Adesman
MD
Medford, OR
Dr. Kamran Aghaie
MD
Clackamas, OR
Dr. Joseph Ahn
M.D.
Portland, OR
Dr. Jeffrey Albaugh
MD
Portland, OR
Dr. Deron Amador
M.D.
Portland, OR
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Katherine Black, MD's specialty? ▼
Katherine Black, MD specializes in Gastroenterology Physician and practices in Portland, Oregon. Credentials: MD.
How much does Katherine Black, MD prescribe under Medicare Part D? ▼
In 2024, Katherine Black, MD wrote 1,000 Medicare Part D claims totaling $671K in drug costs for 439 beneficiaries.
What is Katherine Black, MD's Medicare quality score? ▼
Katherine Black, MD has a CMS MIPS Final Score of 84.6/100 (Quality: 94.8, Cost: 53.9). 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 Katherine Black, MD located? ▼
Katherine Black, MD is located at 1130 NW 22ND AVE STE 410, Portland, OR, 97210. Phone: (503) 229-7137.
What is Katherine Black, MD's NPI number? ▼
Katherine Black, MD's National Provider Identifier (NPI) is 1801018122, issued on 05/03/2007.
Does Katherine Black, MD prescribe more brand-name or generic drugs? ▼
Katherine Black, MD's prescribing is 24% brand-name and 76% generic drugs by claim count, with $632K in brand drug costs.
Does Katherine Black, MD prescribe opioids? ▼
Yes, Katherine Black, MD had 13 opioid claims in 2024 with an opioid prescribing rate of 1.3%.
How many Gastroenterology Physician providers are there in the US? ▼
There are 17,061 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 848 Medicare Part D claims per year.
What drugs does Katherine Black, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Katherine Black, MD's most frequently prescribed drugs include Omeprazole, Peg 3350-Electrolyte, Sod Sulf-Potass Sulf-Mag Sulf. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Katherine Black, MD accept Medicare? ▼
Katherine Black, MD appears in CMS Medicare data with 1,000 Part D claims and 439 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Katherine Black, MD's credentials? ▼
Katherine Black, MD's NPI is 1801018122 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.