Katherine Chin
Internal Medicine Physician in Baltimore, Maryland. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in 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.
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Katherine Chin filed 735 Medicare Part D claims in 2023 as a Internal Medicine Physician in Baltimore, Maryland, prescribing 0% generic.
- 735
- Part D claims, 2023
- 0%
- 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.
Katherine Chin's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
735 Top 29% higher than 71% of 1,370,886 prescribers
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
Katherine Chin practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Chin?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Maryland
How Internal Medicine Physician compares to other specialties among Maryland providers
Largest specialties in Maryland (% of in-state providers)
Internal Medicine Physician ranks #8 among Maryland's specialties (2.8% of in-state providers)
Each bar is a specialty's share of the Maryland provider total, by primary NUCC taxonomy. The highlighted bar is Internal Medicine Physician; the long tail of smaller specialties is omitted for legibility.
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Internal Medicine Physician. Verify directly:
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).
Katherine Chin appears in the CMS NPPES registry as a Internal Medicine Physician provider at 110 S PACA ST, Baltimore, MD, 21201, with a listed phone of (410) 328-4527. NPI 1104210368 was issued on 03/26/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Chin 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 735 prescription claims written by this provider, covering 185 Medicare beneficiaries and totaling roughly $384K in drug spend, split 59% brand-name and 0% 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.
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
Provider Details
| NPI | 1104210368 |
|---|---|
| Specialty | Internal Medicine Physician |
| Gender | Female |
| NPI Issued | 03/26/2015 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm Katherine Chin's current license status, disciplinary history, and board certifications with the Maryland Board of Physicians in Maryland before relying on this page for a clinical or care decision.
How we sourced this profile
Hospital and facility affiliations
Facilities where Katherine Chin 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.
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 Chin. Source: openpaymentsdata.cms.gov.
Total received
$514
Largest payer
Resmed Corp
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 · Brand-heavy
59% brand-name claims vs 0% generic, on 735 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.
Prescribing Breakdown
- 30-Day Fills
- 1,193
- Total Day Supply
- 33,087
- Brand vs Generic
- 59% brand / 0% generic
- Brand Drug Cost
- $368K
- Antibiotic Claims
- 65
Patient Demographics
- Average Patient Age
- 72.5 years
- Avg HCC Risk Score
- 1.84
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 18, 65-74: 96, 75-84: 58, 85+: 13
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Katherine Chin prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trelegy Ellipta
Trelegy Ellipta
162 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
85 claims
- Prednisone 45
Prednisone
45 claims
- Anoro Ellipta 40
Anoro Ellipta
40 claims
- Montelukast Sodium 27
Montelukast Sodium
27 claims
- Spiriva Respimat 25
Spiriva Respimat
25 claims
- Stiolto Respimat 24
Stiolto Respimat
24 claims
- Azithromycin 23
Azithromycin
23 claims
| Drug | Claims |
|---|---|
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 162 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 85 |
| Prednisone | 45 |
| Anoro Ellipta Umeclidinium Brm/Vilanterol Tr | 40 |
| Montelukast Sodium | 27 |
| Spiriva Respimat Tiotropium Bromide | 25 |
| Stiolto Respimat Tiotropium Br/Olodaterol Hcl | 24 |
| Azithromycin | 23 |
| Breo Ellipta Fluticasone/Vilanterol | 20 |
| Advair Diskus Fluticasone Propion/Salmeterol | 18 |
* 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 Katherine Chin fits within the Internal Medicine Physician landscape nationally.
Katherine Chin's 735 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Chin.
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 Maryland 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.
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Frequently Asked Questions
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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