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2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1598719080 M.D.
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Esther Oh, M.D.

Geriatric Medicine (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 4,215 in Geriatric Medicine (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.

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
353
Medicare Part D claims · 75 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
74.4/100
▼ 9 pts below national avg 83.5 · Mid-tier
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Esther Oh, M.D. reported a CMS MIPS final score of 74.4/100 - below the 83.5 national average - and filed 353 Medicare Part D claims in 2024.

74.4/100
MIPS score · -9 vs avg
353
Part D claims, 2024
94%
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 Esther Oh, M.D.

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 1598719080), first enumerated 05/20/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 353 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 74.4/100 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.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Hospital affiliations

    1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • 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 1598719080 · Geriatric Medicine (Internal Medicine) Physician

NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-BELOW · RX-LIGHT · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1598719080
  • ENUM-LEGACY 2006
  • TAX-NARROW 4,215
  • MIPS-BELOW 74.4/100
  • RX-LIGHT 353
  • BOOK-THIN 126 in Maryland
  • PHOTO-FINISH April Ehrlich · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Esther Oh, M.D.'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.

74 ≥ 13th percentile 13% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). This entry sits in this band. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

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 Esther Oh, M.D. sits

This provider among geriatric medicine (internal medicine) physician peers

Across the 686 geriatric medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Esther Oh, M.D. writes more Part D claims than 23% of them and scores higher on MIPS quality than 17% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 77Esther Oh, M.D., Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 17
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one geriatric medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is Esther Oh, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Esther Oh, M.D. 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 Esther Oh, M.D.?

Below national average

NPI registry status

Active

Issued 05/20/2006

NPI 1598719080

Primary specialty

Geriatric Medicine (Internal Medicine) Physician

Niche

4,215 US NPIs in this specialty

Medicare Part D claims

353 92% vs specialty avg

2024 prescription claims

Specialty avg: 4,420

MIPS final score

74.4/100 9.1 pts vs avg

Mid-tier band

vs 83.5 national avg

Specialty distribution in Maryland

How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Maryland providers

Maryland providers
Behavior Technician15.8%Clinical Social Worker5.4%Home Health Aide4.4%Student in an Organized Heal…4.4%Physical Therapist3.8%Pharmacist3.5%Geriatric Medicine (Internal…0.1%
Largest specialties in Maryland (% of in-state providers)

Medicare quality performance, MIPS

Esther Oh, M.D.'s 2023 MIPS final score plotted against the Geriatric Medicine (Internal Medicine) Physician national average

Below national average
MIPS Final Score
74.4/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%74.4%
MIPS final score (Geriatric Medicine (Internal Medicine) Physician) - 74.4/100 vs national avg 83.5
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

4940 EASTERN AVE
Baltimore, MD 21224
(410) 550-0925

Provider Details

NPI 1598719080
Specialty Geriatric Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Female
NPI Issued 05/20/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

74.3962
Final Score
Measured-score avg: 83.5
64.7185
Quality
52.4354
Cost
97
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Esther Oh, M.D. 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.

Johns Hopkins University
Baltimore, MD

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Generic-heavy

Esther Oh, M.D. - brand share 6.0%
Geriatric Medicine (Internal Medicine) Physician average

6% brand-name claims vs 94% generic, on 353 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.

353
Total Claims
$15K
Total Drug Cost
75
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
788.8
Total Day Supply
23,459
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$2K
Generic Drug Cost
$12K

Patient Demographics

Average Patient Age
79.3 years
Avg HCC Risk Score
1.36
Gender Split
60% female / 40% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Esther Oh, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Donepezil Hcl
 70
Sertraline Hcl
 40
Escitalopram Oxalate
 38
Rivastigmine
 36
Memantine Hcl
 34
Trazodone Hcl
 29
Mirtazapine
 28
Lorazepam
 16
Memantine Hcl Er
Memantine Hcl
16

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

More Geriatric Medicine (Internal Medicine) Physician in MD → All providers in Maryland → Compare specialties →

Geriatric Medicine (Internal Medicine) Physician Overview

How Esther Oh, M.D. fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.

4,215
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,420
Avg Claims per Provider

Esther Oh, M.D.'s 353 claims are below the specialty average of 4,420.

Nationwide Geriatric Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Oh, both outside Maryland so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (74.4 here).

April Ehrlich 74.4 AZ Todd James 74.5 CA Helen Kao 74.5 OR Candace Kim 74.5 CA

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Hanna Kackielo Norwich, CT Noel Ballentine Hershey, PA Vinod Valiveti Oxnard, CA Maryjo Cleveland Akron, OH

Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Maryland

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

One of 126 Geriatric Medicine (Internal Medicine) Physician providers enrolled in Maryland, 5 are shown here.

Dr. Peter Abadir
M.D.
Baltimore, MD
Dr. Suzan Abdo
MD
Clarksville, MD
Dr. Marcelino Albuerne
M.D.
Catonsville, MD
Dr. Jeanne Asher
M.D.
Kensington, MD
Dr. Pamela Aung
MD
Parkville, MD

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

Frequently Asked Questions

What is Esther Oh, M.D.'s specialty? ▼
Esther Oh, M.D. specializes in Geriatric Medicine (Internal Medicine) Physician and practices in Baltimore, Maryland. Credentials: M.D..
How much does Esther Oh, M.D. prescribe under Medicare Part D? ▼
In 2024, Esther Oh, M.D. wrote 353 Medicare Part D claims totaling $15K in drug costs for 75 beneficiaries.
What is Esther Oh, M.D.'s Medicare quality score? ▼
Esther Oh, M.D. has a CMS MIPS Final Score of 74.4/100 (Quality: 64.7, Cost: 52.4). 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 Esther Oh, M.D. located? ▼
Esther Oh, M.D. is located at 4940 EASTERN AVE, Baltimore, MD, 21224. Phone: (410) 550-0925.
What is Esther Oh, M.D.'s NPI number? ▼
Esther Oh, M.D.'s National Provider Identifier (NPI) is 1598719080, issued on 05/20/2006.
Does Esther Oh, M.D. prescribe more brand-name or generic drugs? ▼
Esther Oh, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $2K in brand drug costs.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,215 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,420 Medicare Part D claims per year.
What drugs does Esther Oh, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Esther Oh, M.D.'s most frequently prescribed drugs include Donepezil Hcl, Sertraline Hcl, Escitalopram Oxalate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Esther Oh, M.D. accept Medicare? ▼
Esther Oh, M.D. appears in CMS Medicare data with 353 Part D claims and 75 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Esther Oh, M.D.'s credentials? ▼
Esther Oh, M.D.'s NPI is 1598719080 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

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

Compiled from official public sources by the editorial process.

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.