NPI registry status
Active
2026 NPPES data Hepatology Physician NPI 1336228253 M.D.
Verify on CMS → Shang Wu, M.D.
Hepatology Physician in Hacienda Heights, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 282 in Hepatology 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
7K
Medicare Part D claims · 1K beneficiaries · Hepatology Physician avg: 803
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
30/100
▼ 53 pts below national avg 83.1 · Below average
Industry payments
$33.8K
108 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Shang Wu, M.D. reported a CMS MIPS final score of 30/100 - below the 83.1 national average - and filed 6,872 Medicare Part D claims in 2023.
- 30/100
- MIPS score · -53 vs avg
- 7K
- Part D claims, 2023
- 89%
- 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.
Shang Wu, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
30 3rd percentile higher than 3% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Shang Wu, M.D. sits
This provider among hepatology physician peers
Across the 95 hepatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Shang Wu, M.D. writes more Part D claims than 99% of them and scores higher on MIPS quality than 1% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one hepatology physician peer from a representative sample of 60; the gold marker is Shang Wu, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Shang Wu, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Shang Wu, M.D.?
Below national averagePrimary specialty
Hepatology Physician
Medicare Part D claims
6,872 9× vs specialty avg
MIPS final score
30/100 53.1 pts vs avg
Specialty distribution in California
How Hepatology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Shang Wu, M.D.'s 2023 MIPS final score plotted against the Hepatology Physician national average
- MIPS Final Score
- 30/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hepatology Physician) - 30/100 vs national avg 83.1
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).
Shang Wu, M.D. appears in the CMS NPPES registry as a Hepatology Physician provider holding M.D. credentials at 3141 S HACIENDA BLVD, Hacienda Heights, CA, 91745, with a listed phone of (626) 937-6663. NPI 1336228253 was issued on 11/02/2006.
Medicare Part D records for calendar year 2023 show 6,872 prescription claims written by this provider, covering 1,006 Medicare beneficiaries and totaling roughly $1.3 million in drug spend, split 11% brand-name and 89% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 30/100 for the 2023 performance year (Quality 0, Cost 100), compared with the national average of 83.1.
Hepatology Physician is a narrow specialty nationwide, with 282 enrolled providers across 36 states and an average of 803 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 | 1336228253 |
|---|---|
| Specialty | Hepatology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 11/02/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
30
Final Score
Avg: 83.1
0
Quality
100
Cost
Reporting: Individual
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 Shang Wu, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$33.8K
Largest payer
Gilead Sciences, 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.
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 Shang Wu, M.D.. To verify Shang Wu, M.D.'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 · Typical
Shang Wu, M.D. - brand share 11.0%
Hepatology Physician average
11% brand-name claims vs 89% generic, on 6,872 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.
6,872
Total Claims
$1.3M
Total Drug Cost
1,006
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 15,345
- Total Day Supply
- 436,292
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $1.0M
- Generic Drug Cost
- $321K
- Antibiotic Claims
- 53
Patient Demographics
- Average Patient Age
- 73.2 years
- Avg HCC Risk Score
- 1.03
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 11, 65-74: 623, 75-84: 302, 85+: 70
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Shang Wu, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Famotidine
Famotidine
1,580 claims
- Omeprazole
Omeprazole
964 claims
- Dexlansoprazole Dr 483
Dexlansoprazole Dr
483 claims
- Atorvastatin Calcium 411
Atorvastatin Calcium
411 claims
- Pantoprazole Sodium 398
Pantoprazole Sodium
398 claims
- Metoclopramide Hcl 395
Metoclopramide Hcl
395 claims
- Vemlidy 266
Vemlidy
266 claims
- Losartan Potassium 211
Losartan Potassium
211 claims
| Drug | Claims |
|---|---|
| Famotidine | 1,580 |
| Omeprazole | 964 |
| Dexlansoprazole Dr Dexlansoprazole | 483 |
| Atorvastatin Calcium | 411 |
| Pantoprazole Sodium | 398 |
| Metoclopramide Hcl | 395 |
| Vemlidy Tenofovir Alafenamide | 266 |
| Losartan Potassium | 211 |
| Metformin Hcl | 189 |
| Amlodipine Besylate | 125 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hepatology Physician Overview
How Shang Wu, M.D. fits within the Hepatology Physician landscape nationally.
282
Hepatology Physician Providers in US
36
States with Hepatology Physician
803
Avg Claims per Provider
Shang Wu, M.D.'s 6,872 claims are above the specialty average of 803.
Nearby Hepatology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Wu.
Dr. Ketan Ajudia
M.D.
Placerville, CA
Dr. Maurizio Bonacini
M.D.
San Francisco, CA
Kay Chen
San Diego, CA
Dr. Eddie Cheung
MD
Oakland, CA
Dr. Allen Cooper
M.D.
Stanford, CA
Compare Hepatology 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hepatology 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
What is Shang Wu, M.D.'s specialty? ▼
Shang Wu, M.D. specializes in Hepatology Physician and practices in Hacienda Heights, California. Credentials: M.D..
How much does Shang Wu, M.D. prescribe under Medicare Part D? ▼
In 2023, Shang Wu, M.D. wrote 6,872 Medicare Part D claims totaling $1.3M in drug costs for 1,006 beneficiaries.
What is Shang Wu, M.D.'s Medicare quality score? ▼
Shang Wu, M.D. has a CMS MIPS Final Score of 30/100 (Quality: 0, Cost: 100). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Shang Wu, M.D. located? ▼
Shang Wu, M.D. is located at 3141 S HACIENDA BLVD, Hacienda Heights, CA, 91745. Phone: (626) 937-6663.
What is Shang Wu, M.D.'s NPI number? ▼
Shang Wu, M.D.'s National Provider Identifier (NPI) is 1336228253, issued on 11/02/2006.
Does Shang Wu, M.D. prescribe more brand-name or generic drugs? ▼
Shang Wu, M.D.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $1.0M in brand drug costs.
How many Hepatology Physician providers are there in the US? ▼
There are 282 Hepatology Physician providers across 36 states in the US. The average Hepatology Physician provider writes 803 Medicare Part D claims per year.
What drugs does Shang Wu, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Shang Wu, M.D.'s most frequently prescribed drugs include Famotidine, Omeprazole, Dexlansoprazole Dr. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Shang Wu, M.D. accept Medicare? ▼
Shang Wu, M.D. appears in CMS Medicare data with 6,872 Part D claims and 1,006 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Shang Wu, M.D.'s credentials? ▼
Shang Wu, M.D.'s NPI is 1336228253 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 (2023). 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 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.
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 May 2026.