NPI registry status
Active
2026 NPPES data Specialist NPI 1447351010 M.D.
Verify on CMS → Mark Jeong, M.D.
Specialist in Denver, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 69,658 in Specialist, 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
2K
Medicare Part D claims · 441 beneficiaries · Specialist avg: 1K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
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 Jeong, M.D. filed 2,277 Medicare Part D claims in 2023 as a Specialist in Denver, Colorado, prescribing 80% generic.
- 2K
- Part D claims, 2023
- 80%
- generic prescribing
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 Jeong, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,277 Top 15% higher than 85% of 1,370,886 prescribers
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
What does the federal data show about Mark Jeong, M.D.?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
2,277 54% vs specialty avg
Specialty distribution in Colorado
How Specialist compares to other specialties among Colorado 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 Specialist. 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).
Mark Jeong, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 2045 N FRANKLIN ST, Denver, CO, 80205, with a listed phone of (303) 338-4545. NPI 1447351010 was issued on 09/26/2006.
Medicare Part D records for calendar year 2023 show 2,277 prescription claims written by this provider, covering 441 Medicare beneficiaries and totaling roughly $544K in drug spend, split 20% brand-name and 80% generic by claim count.
Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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 | 1447351010 |
|---|---|
| Specialty | Specialist |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 09/26/2006 |
Hospital and facility affiliations
Facilities where Mark Jeong, 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.
Colorado Permanente Medical Group PC
Denver, CO
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 · Typical
Mark Jeong, M.D. - brand share 20.0%
Specialist average
20% brand-name claims vs 80% generic, on 2,277 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.
2,277
Total Claims
$544K
Total Drug Cost
441
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 6,044
- Total Day Supply
- 180,567
- Brand vs Generic
- 20% brand / 80% generic
- Brand Drug Cost
- $509K
- Generic Drug Cost
- $35K
- Antibiotic Claims
- 11
Patient Demographics
- Average Patient Age
- 76.8 years
- Avg HCC Risk Score
- 1.62
- Gender Split
- 44% female / 56% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mark Jeong, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Metoprolol Succinate
Metoprolol Succinate
357 claims
- Losartan Potassium
Losartan Potassium
172 claims
- Entresto
Entresto
152 claims
- Spironolactone 129
Spironolactone
129 claims
- Amiodarone Hcl 117
Amiodarone Hcl
117 claims
- Atorvastatin Calcium 116
Atorvastatin Calcium
116 claims
- Jardiance 109
Jardiance
109 claims
- Furosemide 108
Furosemide
108 claims
| Drug | Claims |
|---|---|
| Metoprolol Succinate | 357 |
| Losartan Potassium | 172 |
| Entresto Sacubitril/Valsartan | 152 |
| Spironolactone | 129 |
| Amiodarone Hcl | 117 |
| Atorvastatin Calcium | 116 |
| Jardiance Empagliflozin | 109 |
| Furosemide | 108 |
| Carvedilol | 95 |
| Pradaxa Dabigatran Etexilate Mesylate | 87 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Mark Jeong, M.D. fits within the Specialist landscape nationally.
69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Mark Jeong, M.D.'s 2,277 claims are above the specialty average of 1,474.
Nearby Specialist Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Jeong.
Mack Abernathy
Aurora, CO
Moses Abraha
Aurora, CO
Dr. Barbara Abrahams
MD
Aurora, CO
Dr. Marcela Abuid
M.D.
Delta, CO
Dr. Gila Ackerman
M.D.
Boulder, CO
Compare Specialist 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 Colorado medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Specialist 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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Mark Jeong, M.D.'s specialty? ▼
Mark Jeong, M.D. specializes in Specialist and practices in Denver, Colorado. Credentials: M.D..
How much does Mark Jeong, M.D. prescribe under Medicare Part D? ▼
In 2023, Mark Jeong, M.D. wrote 2,277 Medicare Part D claims totaling $544K in drug costs for 441 beneficiaries.
Where is Mark Jeong, M.D. located? ▼
Mark Jeong, M.D. is located at 2045 N FRANKLIN ST, Denver, CO, 80205. Phone: (303) 338-4545.
What is Mark Jeong, M.D.'s NPI number? ▼
Mark Jeong, M.D.'s National Provider Identifier (NPI) is 1447351010, issued on 09/26/2006.
Does Mark Jeong, M.D. prescribe more brand-name or generic drugs? ▼
Mark Jeong, M.D.'s prescribing is 20% brand-name and 80% generic drugs by claim count, with $509K in brand drug costs.
How many Specialist providers are there in the US? ▼
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Mark Jeong, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Jeong, M.D.'s most frequently prescribed drugs include Metoprolol Succinate, Losartan Potassium, Entresto. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Jeong, M.D. accept Medicare? ▼
Mark Jeong, M.D. appears in CMS Medicare data with 2,277 Part D claims and 441 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Jeong, M.D.'s credentials? ▼
Mark Jeong, M.D.'s NPI is 1447351010 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
Compiled from official public sources by the PlainDoctor editorial team.