Frank H. Ernst, MD
Internal Medicine Physician · Parker, CO
Frank H. Ernst, MD is an internal medicine physician with a practice address in Parker, Colorado, and NPI 1134340482, issued on May 2, 2007. Check the license (Colorado 30445, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Frank H. Ernst
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 30445 CO
Self-reported in NPPES; status is on the state search - Practice location
- 12230 Lioness Way, Parker, CO 80134
- Phone
- (720) 644-9355
- Enumerated
- May 2, 2007
- Record last updated
- Aug 19, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 01304450 CO
- Medicare enrollment
- Enrolled (PECOS I20081030000850); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 1990
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 12230 Lioness Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ekua Antwi, FNPFamily Nurse Practitioner1336721976
- Kyla Araujo, ACNPC-AGAcute Care Nurse Practitioner1952955866
- Elizabeth ArbuisoFamily Nurse Practitioner1972250017
- James Archuleta, FNP-BCFamily Nurse Practitioner1316220742
Verify Frank H. Ernst in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 30445Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.6 times the Medicare Part D claims of the average internal medicine physician in 2024
11,470 Medicare Part D claims for 485 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 37 claims were for opioids.
Most prescribed
- Atorvastatin Calcium863 claims
- Eliquis849 claims
- Levothyroxine Sodium441 claims
- Amlodipine Besylate374 claims
- Gabapentin314 claims
- Metformin Hcl267 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 74.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Summit Medical Consultants PLLCGreenwood Village, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Frank H. Ernst among 2,046 internal medicine physician records in Colorado
Frank H. Ernst, MD is one of 2,046 internal medicine physician records with a practice address in Colorado. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 39% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1990 · median 2006 among the 1,090 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
41 internal medicine physician records list a practice address in Parker
They are 41 of the 1,871 NPPES records with a practice address in Parker, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Parker → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vineela Battini, M.D.Parker, CO 801341710116348
- Diana Brightbill, MDParker, CO 801341396713244
- Diego Freitas, M.D.Parker, CO 801341487634481
- Shauna Gulley, M.D.Parker, CO 801341356553879
- Shahid Javery, MDParker, CO 801341871658567
- Rajendra Kadari, M.D.Parker, CO 801341598946675
- Michele Keffeler, M.D.Parker, CO 801341477810190
- Dennis Kinder, M.D.Parker, CO 801341598827255
Common questions
What is Frank H. Ernst, MD's NPI number?
Frank H. Ernst, MD's National Provider Identifier (NPI) is 1134340482, issued on May 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Frank H. Ernst, MD located?
The NPPES record lists a practice address at 12230 Lioness Way, Parker, CO, 80134. Phone: (720) 644-9355. Providers update this record themselves, so call before visiting.
How can I verify Frank H. Ernst, MD's license?
NPPES lists Colorado license number 30445, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Frank H. Ernst, MD prescribe under Medicare Part D?
In 2024, Frank H. Ernst, MD had 11,470 Medicare Part D claims for 485 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Frank H. Ernst, MD's MIPS final score?
The 2023 MIPS final score is 74.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.