NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1871708867 M.D.
Verify on CMS → Meijuan Yan, M.D.
Endocrinology, Diabetes & Metabolism Physician in Lancaster, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 8,078 in Endocrinology, Diabetes & Metabolism 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
4K
Medicare Part D claims · 434 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
50%
generic claims · 42% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Meijuan Yan, M.D. filed 4,370 Medicare Part D claims in 2024 as an Endocrinology, Diabetes & Metabolism Physician in Lancaster, Pennsylvania, prescribing 50% generic.
- 4K
- Part D claims, 2024
- 50%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥92nd
- 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.
Federal trust snapshot
What official records show about Meijuan Yan, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1871708867), first enumerated 05/11/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 4,370 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- 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.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Pennsylvania statewide board action statistics are published annually — these figures describe aggregate state activity, not Meijuan Yan, M.D.'s individual license status. Verify directly with the state medical board.
Source: PA-BOM annual report 2023
- 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 1871708867 · Endocrinology, Diabetes & Metabolism Physician
NPI-10 · ENUM-MID · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1871708867
- ENUM-MID 2007
- TAX-MID 8K Endocrinology, Diabetes
- RX-MID 4,370
- BOOK-THIN 379 in Pennsylvania
- PHOTO-ENUM Peter Butler, M.D. · 2007
Meijuan Yan, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
4,370 ≥ 92nd percentile 92% of 1,416,883 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 · 2024
✓
Board certification likely (heuristic, not verified)
Meijuan Yan, 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 Meijuan Yan, M.D.?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
4,370 60% vs specialty avg
Specialty distribution in Pennsylvania
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Pennsylvania 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 Endocrinology, Diabetes & Metabolism 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 | 1871708867 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 05/11/2007 |
Hospital and facility affiliations
Facilities where Meijuan Yan, 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.
Lancaster General Medical Group
Lititz, PA
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 - Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Meijuan Yan, M.D.. To verify Meijuan Yan, M.D.'s current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Above average
Meijuan Yan, M.D. - brand share 42.0%
Endocrinology, Diabetes & Metabolism Physician average
42% brand-name claims vs 50% generic, on 4,370 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.
4,370
Total Claims
$1.3M
Total Drug Cost
434
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,944.3
- Total Day Supply
- 295,720
- Brand vs Generic
- 42% brand / 50% generic
- Brand Drug Cost
- $1.2M
- Generic Drug Cost
- $43K
- Antibiotic Claims
- 13
Patient Demographics
- Average Patient Age
- 72.1 years
- Avg HCC Risk Score
- 1.41
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 48, 65-74: 211, 75-84: 145, 85+: 30
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Meijuan Yan, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Levothyroxine Sodium
Levothyroxine Sodium
368 claims
- Ozempic
Ozempic
248 claims
- Synthroid
Synthroid
248 claims
- Jardiance
Jardiance
208 claims
- Metformin Hcl Er
Metformin Hcl Er
200 claims
- Metformin Hcl
Metformin Hcl
148 claims
- Methimazole 127
Methimazole
127 claims
- Rosuvastatin Calcium 116
Rosuvastatin Calcium
116 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 368 |
| Ozempic Semaglutide | 248 |
| Synthroid Levothyroxine Sodium | 248 |
| Jardiance Empagliflozin | 208 |
| Metformin Hcl Er Metformin Hcl | 200 |
| Metformin Hcl | 148 |
| Methimazole | 127 |
| Rosuvastatin Calcium | 116 |
| Ultra-Fine Mini Pen Needle Pen Needle, Diabetic | 114 |
| Atorvastatin Calcium | 112 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in PA →
All providers in Pennsylvania →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Meijuan Yan, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
8,078
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,739
Avg Claims per Provider
Meijuan Yan, M.D.'s 4,370 claims are above the specialty average of 2,739.
Nationwide Endocrinology, Diabetes & Metabolism Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Yan, both outside Pennsylvania so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Yan.
One of 379 Endocrinology, Diabetes & Metabolism Physician providers enrolled in Pennsylvania, 5 are shown here.
Dr. Munira Abbasi
MD
Pittsburgh, PA
Dr. Jana Abraham
MD
Berwyn, PA
Dr. Rachel Abramczyk
DO
Parkesburg, PA
Dr. Michael Adler
M.D.
Lewisburg, PA
Shivani Agarwal
Philadelphia, PA
Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Meijuan Yan, M.D.'s specialty? ▼
Meijuan Yan, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Lancaster, Pennsylvania. Credentials: M.D..
How much does Meijuan Yan, M.D. prescribe under Medicare Part D? ▼
In 2024, Meijuan Yan, M.D. wrote 4,370 Medicare Part D claims totaling $1.3M in drug costs for 434 beneficiaries.
Where is Meijuan Yan, M.D. located? ▼
Meijuan Yan, M.D. is located at 2112 HARRISBURG PIKE, Lancaster, PA, 17601. Phone: (717) 544-3059.
What is Meijuan Yan, M.D.'s NPI number? ▼
Meijuan Yan, M.D.'s National Provider Identifier (NPI) is 1871708867, issued on 05/11/2007.
Does Meijuan Yan, M.D. prescribe more brand-name or generic drugs? ▼
Meijuan Yan, M.D.'s prescribing is 42% brand-name and 50% generic drugs by claim count, with $1.2M in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 8,078 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,739 Medicare Part D claims per year.
What drugs does Meijuan Yan, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Meijuan Yan, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Ozempic, Synthroid. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Meijuan Yan, M.D. accept Medicare? ▼
Meijuan Yan, M.D. appears in CMS Medicare data with 4,370 Part D claims and 434 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Meijuan Yan, M.D.'s credentials? ▼
Meijuan Yan, M.D.'s NPI is 1871708867 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.
- 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
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.