NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1154615300 M.D.
Verify on CMS → Annie Liu, M.D.
Obstetrics & Gynecology Physician in Boston, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,326 in Obstetrics & Gynecology 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
126
Medicare Part D claims · 63 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Industry payments
$39.99
1 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Annie Liu, M.D. filed 126 Medicare Part D claims in 2023 as an Obstetrics & Gynecology Physician in Boston, Massachusetts.
- 126
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥35th
- pct by Part D claim volume (lower-bound band)
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.
CMS NPPES provider registry desk
NPI 1154615300 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1154615300
- ENUM-MID 2011
- TAX-MID 44K Obstetrics &
- RX-LIGHT 126
- BOOK-LIGHT 1,115 in Massachusetts
- PHOTO-ENUM Christopher Bauer · 2011
Annie Liu, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
126 ≥ 35th percentile 35% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Annie Liu, M.D. 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 Annie Liu, M.D.?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
126 30% vs specialty avg
Specialty distribution in Massachusetts
How Obstetrics & Gynecology Physician compares to other specialties among Massachusetts providers
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 Obstetrics & Gynecology Physician. Verify directly:
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 | 1154615300 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 06/06/2011 |
Hospital and facility affiliations
Facilities where Annie Liu, 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.
Kaiser Foundation Health Plan OF The Northwest
Clackamas, 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 Annie Liu, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$40
Largest payer
GlaxoSmithKline, LLC.
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 - Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Annie Liu, M.D.. To verify Annie Liu, M.D.'s current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
126
Total Claims
$4K
Total Drug Cost
63
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 171
- Total Day Supply
- 3,188
- Generic Drug Cost
- $3K
- Opioid Claims
- 35 (27.8% rate)
- Antibiotic Claims
- 11
Patient Demographics
- Average Patient Age
- 73.7 years
- Avg HCC Risk Score
- 1.13
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 30 |
| Ibuprofen | 21 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Obstetrics & Gynecology Physician in MA →
All providers in Massachusetts →
Compare specialties →
Obstetrics & Gynecology Physician Overview
How Annie Liu, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Annie Liu, M.D.'s 126 claims are below the specialty average of 179.
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Liu, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2011)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Obstetrics & Gynecology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Liu.
One of 1,115 Obstetrics & Gynecology Physician providers enrolled in Massachusetts, 5 are shown here.
Dr. Jodi Abbott
MD
Boston, MA
Dr. Mary Kathryn Abel
AB
Boston, MA
Dr. Marie Elise Abi Antoun
MD
Boston, MA
Dr. Ashley Ackerman
MD
Brookline, MA
Dr. Christina Acocella
M.D.
Framingham, MA
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Annie Liu, M.D.'s specialty? ▼
Annie Liu, M.D. specializes in Obstetrics & Gynecology Physician and practices in Boston, Massachusetts. Credentials: M.D..
How much does Annie Liu, M.D. prescribe under Medicare Part D? ▼
In 2023, Annie Liu, M.D. wrote 126 Medicare Part D claims totaling $4K in drug costs for 63 beneficiaries.
Where is Annie Liu, M.D. located? ▼
Annie Liu, M.D. is located at 330 BROOKLINE AVE, Boston, MA, 02215. Phone: (617) 667-2285.
What is Annie Liu, M.D.'s NPI number? ▼
Annie Liu, M.D.'s National Provider Identifier (NPI) is 1154615300, issued on 06/06/2011.
Does Annie Liu, M.D. prescribe opioids? ▼
Yes, Annie Liu, M.D. had 35 opioid claims in 2023 with an opioid prescribing rate of 27.8%.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does Annie Liu, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Annie Liu, M.D.'s most frequently prescribed drugs include Oxycodone Hcl, Ibuprofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Annie Liu, M.D. accept Medicare? ▼
Annie Liu, M.D. appears in CMS Medicare data with 126 Part D claims and 63 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Annie Liu, M.D.'s credentials? ▼
Annie Liu, M.D.'s NPI is 1154615300 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.
- 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
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.