Marietta Estelle King, NP
Internal Medicine Physician · Montrose, CO
Marietta Estelle King, NP is an internal medicine physician with a practice address in Montrose, Colorado, and NPI 1790550804, issued on Nov 20, 2023. Check the license (Colorado APN.0999306-NP, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marietta Estelle King
- Credential
- NP
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- APN.0999306-NP CO
Self-reported in NPPES; status is on the state search - Practice location
- 800 S 3RD St, Montrose, CO 81401
- Phone
- (970) 765-6760
- Enumerated
- Nov 20, 2023
- Record last updated
- Nov 20, 2023
- Medicare enrollment
- Enrolled (PECOS I20240104003199); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 800 S 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marietta Estelle King in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license APN.0999306-NPCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
240 Medicare Part D claims for 101 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Metoprolol Succinate13 claims
- Prednisone12 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.
Bills Medicare through one group practice
- Montrose Memorial Hospital, IncMontrose, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marietta Estelle King among 2,046 internal medicine physician records in Colorado
Marietta Estelle King, NP 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 2023, is newer than 98% of them.
- NPI issued2023 · 98% of these records are older, under 1% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2023 · median 2006 among the 1,090 with a school on file
- Record last updated2023 · 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).
12 internal medicine physician records list a practice address in Montrose
They are 12 of the 757 NPPES records with a practice address in Montrose, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Montrose → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Andrew Bolton, M.D., M.P.HMontrose, CO 814011376961367
- Michael Brezinsky, M.D.Montrose, CO 814011245233378
- Christine Gieszl, MDMontrose, CO 814011336199066
- Kenneth Harris, MDMontrose, CO 814011184698516
- Carol Harrold, MDMontrose, CO 814011912959420
- John Lambert, M.D.Montrose, CO 814011407859549
- Bryce Lokey, MDMontrose, CO 814011811034184
- Steven Miller, M.D.Montrose, CO 814011538162649
Common questions
What is Marietta Estelle King, NP's NPI number?
Marietta Estelle King, NP's National Provider Identifier (NPI) is 1790550804, issued on Nov 20, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Marietta Estelle King, NP located?
The NPPES record lists a practice address at 800 S 3RD St, Montrose, CO, 81401. Phone: (970) 765-6760. Providers update this record themselves, so call before visiting.
How can I verify Marietta Estelle King, NP's license?
NPPES lists Colorado license number APN.0999306-NP, 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 Marietta Estelle King, NP prescribe under Medicare Part D?
In 2024, Marietta Estelle King, NP had 240 Medicare Part D claims for 101 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.