Nathan Grohmann, MD
Otolaryngology Physician · Denver, CO
Nathan Grohmann, MD is an otolaryngology physician with a practice address in Denver, Colorado, and NPI 1609119627, issued on Mar 27, 2013. Check the license (Colorado DR.0065000, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nathan Grohmann
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- DR.0065000 CO
Self-reported in NPPES; status is on the state search - Practice location
- 777 Bannock St, Denver, CO 80204
- Phone
- (720) 848-0000
- Enumerated
- Mar 27, 2013
- Record last updated
- Dec 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200909002704); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 188 in Colorado → Look up another NPI →
Also registered at 777 Bannock St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eric Aaltonen, M.D.Vascular & Interventional Radiology Physician1538340344
- Sarah Abbott, LCSWClinical Social Worker1326519042
- Ejaaz Abdulkabir, CNMAdvanced Practice Midwife1710551783
- Miren Aboitiz, NP-CWomen's Health Nurse Practitioner1568862282
- Edgar Acosta, MSWClinical Social Worker1467900381
- Shanie Adaime, RDHDental Hygienist1083318554
Verify Nathan Grohmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0065000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average otolaryngology physician in 2024
161 Medicare Part D claims for 56 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Fluticasone Propionate26 claims
- Azelastine Hcl15 claims
- Omeprazole14 claims
- Levothyroxine Sodium12 claims
- Mometasone Furoate12 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 practice group's MIPS final score for 2023 (Medicare payment program): 91.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $164.26
2 payments; by number, the most common kind was food and beverage; the largest payer was DePuy Synthes Sales Inc. The 6,429 providers of this specialty with any payment received $1,922.50 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Denver Health And Hospital AuthorityDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Grohmann among 188 otolaryngology physician records in Colorado
Nathan Grohmann, MD is one of 188 otolaryngology physician records with a practice address in Colorado. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 76% of them.
- NPI issued2013 · 76% of these records are older, 20% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2013 · median 2007 among the 136 with a school on file
- Record last updated2020 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Colorado
There are 188 otolaryngology physician records in Colorado.
All 188 in Colorado → Every provider in Denver → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Emily Ambrose, M.D.Denver, CO 802041225457997
- Vincent Eusterman, MDDenver, CO 802041396768479
- David Opperman, M.D.Denver, CO 802041144399197
- Peggy Battalora, MDDenver, CO 802051417091125
- Lorna Brass, M.D.Denver, CO 802051477697175
- Heather Davidson, AU.D.Denver, CO 802051427174986
- Robert Fieman, MDDenver, CO 802051619011491
- Marion Filippone, MDDenver, CO 802051497854590
Common questions
What is Nathan Grohmann, MD's NPI number?
Nathan Grohmann, MD's National Provider Identifier (NPI) is 1609119627, issued on Mar 27, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Grohmann, MD located?
The NPPES record lists a practice address at 777 Bannock St, Denver, CO, 80204. Phone: (720) 848-0000. Providers update this record themselves, so call before visiting.
How can I verify Nathan Grohmann, MD's license?
NPPES lists Colorado license number DR.0065000, 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 Nathan Grohmann, MD prescribe under Medicare Part D?
In 2024, Nathan Grohmann, MD had 161 Medicare Part D claims for 56 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Nathan Grohmann, MD's MIPS final score?
The 2023 MIPS final score is 91.1 of 100, reported for the practice group. 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.