2026 NPPES data Internal Medicine Physician NPI 1538247143 MD
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EVA LIU, MD

Internal Medicine Physician in SOUTH SAN FRANCISCO, California. 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
7K
Medicare Part D claims · 1K beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

EVA LIU, MD filed 7,122 Medicare Part D claims in 2023 as a Internal Medicine Physician in SOUTH SAN FRANCISCO, California, prescribing 92% generic.

7K
Part D claims, 2023
92%
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.

EVA LIU, MD's Medicare Part D volume vs every U.S. prescriber

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

7,122 Top 4% higher than 96% 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 certification likely (heuristic — not verified)

EVA LIU, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 EVA LIU, MD?

Quality data not reported

NPI registry status

Active

Issued 11/01/2006

NPI 1538247143

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

7,122 162% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in California

How Internal Medicine Physician compares to other specialties among California providers

California providers

Internal Medicine Physician share within California

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within California

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).

EVA LIU, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 1200 EL CAMINO REAL, SOUTH SAN FRANCISCO, CA, 94080, with a listed phone of (650) 742-2000. NPI 1538247143 was issued on 11/01/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LIU 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 7,122 prescription claims written by this provider, covering 1,059 Medicare beneficiaries and totaling roughly $284K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 3.7%. 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

1200 EL CAMINO REAL
SOUTH SAN FRANCISCO, CA 94080

Provider Details

NPI 1538247143
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 11/01/2006

Hospital and facility affiliations

Facilities where EVA LIU, 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.

NORTH EAST MEDICAL SERVICES
SAN FRANCISCO, CA
PERMANENTE MEDICAL GROUP INC
SAN BRUNO, CA

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

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to EVA LIU, MD. To verify EVA LIU, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

EVA LIU, MD — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 7,122 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.

7,122
Total Claims
$284K
Total Drug Cost
1,059
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
18,611
Total Day Supply
542,241
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$166K
Generic Drug Cost
$116K
Opioid Claims
264 (3.7% rate)
Antibiotic Claims
218

Patient Demographics

Average Patient Age
75.9 years
Avg HCC Risk Score
1.18
Gender Split
59% female / 41% male
Age Distribution
<65: 26, 65-74: 485, 75-84: 373, 85+: 175

Top Prescribed Drugs (Medicare Part D)

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

What EVA LIU, MD 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
518
Losartan Potassium
410
Amlodipine Besylate
380
Lisinopril
250
Levothyroxine Sodium
247
Simvastatin
194
Metformin Hcl
184
Atenolol
180
Furosemide
164
Metoprolol Tartrate
150

* 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 EVA LIU, MD 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

EVA LIU, MD's 7,122 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in California

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

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

Frequently Asked Questions

What is EVA LIU, MD's specialty?
EVA LIU, MD specializes in Internal Medicine Physician and practices in SOUTH SAN FRANCISCO, California. Credentials: MD.
How much does EVA LIU, MD prescribe under Medicare Part D?
In 2023, EVA LIU, MD wrote 7,122 Medicare Part D claims totaling $284K in drug costs for 1,059 beneficiaries.
Where is EVA LIU, MD located?
EVA LIU, MD is located at 1200 EL CAMINO REAL, SOUTH SAN FRANCISCO, CA, 94080. Phone: (650) 742-2000.
What is EVA LIU, MD's NPI number?
EVA LIU, MD's National Provider Identifier (NPI) is 1538247143, issued on 11/01/2006.
Does EVA LIU, MD prescribe more brand-name or generic drugs?
EVA LIU, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $166K in brand drug costs.
Does EVA LIU, MD prescribe opioids?
Yes, EVA LIU, MD had 264 opioid claims in 2023 with an opioid prescribing rate of 3.7%.
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 EVA LIU, MD prescribe most often?
Based on 2023 Medicare Part D data, EVA LIU, MD's most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does EVA LIU, MD accept Medicare?
EVA LIU, MD appears in CMS Medicare data with 7,122 Part D claims and 1,059 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify EVA LIU, MD's credentials?
EVA LIU, MD's NPI is 1538247143 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

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