NPI registry status
Active
2026 NPPES data Addiction Medicine (Family Medicine) Physician NPI 1669559100 MD
Verify on CMS → Mark Delon Lim, MD
Addiction Medicine (Family Medicine) Physician in Biddeford, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 763 in Addiction Medicine (Family 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
246
Medicare Part D claims · 22 beneficiaries · Addiction Medicine (Family Medicine) Physician avg: 1K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.1/100
▲ 15 pts above national avg 83.1 · Exceptional
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
Mark Delon Lim, MD reported a CMS MIPS final score of 98.1/100 - above the 83.1 national average - and filed 246 Medicare Part D claims in 2023.
- 98.1/100
- MIPS score · +15 vs avg
- 246
- Part D claims, 2023
- 96%
- 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.
Mark Delon Lim, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
98 Top 11% higher than 89% 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 Mark Delon Lim, MD sits
This provider among addiction medicine (family medicine) physician peers
Across the 79 addiction medicine (family medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mark Delon Lim, MD writes more Part D claims than 46% of them and scores higher on MIPS quality than 84% - placing this provider in the lower-volume, high-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 addiction medicine (family medicine) physician peer from a representative sample of 60; the gold marker is Mark Delon Lim, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Mark Delon Lim, MD 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 Mark Delon Lim, MD?
High performer (top quartile)Primary specialty
Addiction Medicine (Family Medicine) Physician
Medicare Part D claims
246 78% vs specialty avg
MIPS final score
98.1/100 15 pts vs avg
Specialty distribution in Maine
How Addiction Medicine (Family Medicine) Physician compares to other specialties among Maine providers
Medicare quality performance, MIPS
Mark Delon Lim, MD's 2023 MIPS final score plotted against the Addiction Medicine (Family Medicine) Physician national average
- MIPS Final Score
- 98.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Addiction Medicine (Family Medicine) Physician) - 98.1/100 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).
Mark Delon Lim, MD appears in the CMS NPPES registry as a Addiction Medicine (Family Medicine) Physician provider holding MD credentials at 235 MAIN ST, Biddeford, ME, 04005, with a listed phone of (207) 283-7660. NPI 1669559100 was issued on 11/01/2006.
Medicare Part D records for calendar year 2023 show 246 prescription claims written by this provider, covering 22 Medicare beneficiaries and totaling roughly $16K in drug spend, split 4% brand-name and 96% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.1/100 for the 2023 performance year (Quality 86.1), compared with the national average of 83.1.
Addiction Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 763 enrolled providers across 48 states and an average of 1,134 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 | 1669559100 |
|---|---|
| Specialty | Addiction Medicine (Family Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/01/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
98.0699
Final Score
Avg: 83.1
86.1398
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Mark Delon Lim, 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.
Mainehealth
Portland, ME
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
Mark Delon Lim, MD - brand share 4.0%
Addiction Medicine (Family Medicine) Physician average
4% brand-name claims vs 96% generic, on 246 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.
246
Total Claims
$16K
Total Drug Cost
22
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 250
- Total Day Supply
- 3,884
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $4K
- Generic Drug Cost
- $12K
Patient Demographics
- Average Patient Age
- 56.5 years
- Avg HCC Risk Score
- 1.30
- Gender Split
- 50% female / 50% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Buprenorphine-Naloxone Buprenorphine Hcl/Naloxone Hcl | 200 |
| Gabapentin | 26 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Addiction Medicine (Family Medicine) Physician in ME →
All providers in Maine →
Compare specialties →
Addiction Medicine (Family Medicine) Physician Overview
How Mark Delon Lim, MD fits within the Addiction Medicine (Family Medicine) Physician landscape nationally.
763
Addiction Medicine (Family Medicine) Physician Providers in US
48
States with Addiction Medicine (Family Medicine) Physician
1,134
Avg Claims per Provider
Mark Delon Lim, MD's 246 claims are below the specialty average of 1,134.
Nearby Addiction Medicine (Family Medicine) Physician Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Lim.
Dr. Alisa Cleary
DO
Farmington, ME
Dr. Sarah Hipkens
MD
Portland, ME
Dr. Gabrielle Kobacker
FNP-C
Portland, ME
Danielle Milovanovic
South Portland, ME
Dr. Arvind Patel
M.D.
Rockland, ME
Compare Addiction Medicine (Family Medicine) 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 Maine medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Addiction Medicine (Family Medicine) 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 Mark Delon Lim, MD's specialty? ▼
Mark Delon Lim, MD specializes in Addiction Medicine (Family Medicine) Physician and practices in Biddeford, Maine. Credentials: MD.
How much does Mark Delon Lim, MD prescribe under Medicare Part D? ▼
In 2023, Mark Delon Lim, MD wrote 246 Medicare Part D claims totaling $16K in drug costs for 22 beneficiaries.
What is Mark Delon Lim, MD's Medicare quality score? ▼
Mark Delon Lim, MD has a CMS MIPS Final Score of 98.1/100 (Quality: 86.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mark Delon Lim, MD located? ▼
Mark Delon Lim, MD is located at 235 MAIN ST, Biddeford, ME, 04005. Phone: (207) 283-7660.
What is Mark Delon Lim, MD's NPI number? ▼
Mark Delon Lim, MD's National Provider Identifier (NPI) is 1669559100, issued on 11/01/2006.
Does Mark Delon Lim, MD prescribe more brand-name or generic drugs? ▼
Mark Delon Lim, MD's prescribing is 4% brand-name and 96% generic drugs by claim count, with $4K in brand drug costs.
How many Addiction Medicine (Family Medicine) Physician providers are there in the US? ▼
There are 763 Addiction Medicine (Family Medicine) Physician providers across 48 states in the US. The average Addiction Medicine (Family Medicine) Physician provider writes 1,134 Medicare Part D claims per year.
What drugs does Mark Delon Lim, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Delon Lim, MD's most frequently prescribed drugs include Buprenorphine-Naloxone, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Delon Lim, MD accept Medicare? ▼
Mark Delon Lim, MD appears in CMS Medicare data with 246 Part D claims and 22 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Delon Lim, MD's credentials? ▼
Mark Delon Lim, MD's NPI is 1669559100 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
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.