Dr. Jonyean Pei, DO
- Medicare services, 2024
- 235
- Medicare patients, 2024
- 192
- Part D claims, 2024
- 202
- Hospital affiliations
- 5
- Medical groups
- 2
- Practice address
- 6767 29th St, Greeley, CO 80634
- Practice phone
- Call (970) 652-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Pei's professional email, personal email and mobile number
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Dr. Jonyean Pei is an emergency medicine physician in Greeley, Colorado
Dr. Pei practices at UCHealth Greeley Hospital in Greeley, Colorado, part of UCHealth.
Dr. Pei's NPI, 1285804633, was assigned on March 1, 2008. Dr. Pei holds Colorado license 49722.
- NPI
- 1285804633NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072684737
- NPI enumeration date
- March 1, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (970) 652-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jonyean Pei practices at UCHealth Greeley Hospital in Greeley, Colorado
Dr. Pei's primary practice is UCHealth Greeley Hospital, at 6767 29th St, Greeley, CO 80634 in Weld County. The practice phone is (970) 652-2000.
- UCHealth Greeley Hospital6767 29th St, Greeley, CO 80634 · Weld CountyPhone(970) 652-2000
Source: Dmand AI Affiliation Data
Dr. Jonyean Pei is affiliated with 6 sites of care and 2 medical groups
Dr. Pei's primary practice is UCHealth Greeley Hospital in Greeley, Colorado, part of UCHealth. Dr. Pei is also affiliated with UCHealth Poudre Valley Hospital. The medical group on file is Emergency Physicians of the Rockies. Dmand AI also links Dr. Pei to 3 more hospitals, 1 breast imaging center and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jonyean Pei's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Pei practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCHealth Greeley Hospital | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jonyean Pei is one of 1,226 emergency medicine physicians in Colorado
Emergency medicine is Dr. Pei's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Pei's licenses on file in 2 states: Colorado and New Jersey.
Specialties and state licenses
- Emergency medicine, ColoradoPrimary
- New Jersey license
Emergency medicine physicians near Dr. Pei
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jonyean Pei billed Medicare for 235 services in 2024
CMS data shows 235 Medicare services from Dr. Pei across 6 procedure codes in 2024, for 192 Medicare patients. Medicare paid $19,759 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Pei's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 692024: 185168%
- Tests and treatments
- 2023: 02024: 50
Dr. Pei compared with the Colorado median for emergency medicine physicians, 2024
- Dr. Pei
- Colorado median
- Medicare services
- 235vs 19918% above
- Medicare patients
- 192vs 193Close to median
- Part D claims
- 77vs 342.3 times
Medians across 1,237 emergency medicine physicians in Colorado with Dmand AI profiles that report each measure.
Dr. Pei's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonyean Pei treated 192 Medicare patients in 2024, average age 73
CMS counts 192 Medicare patients who saw Dr. Pei in 2024. The largest group is 65 to 74, with 73 patients. 74% of them have high blood pressure, and 63% have high cholesterol. 29% are also on Medicaid. Their average risk score is 2.03, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Pei's median patient age at 44, with 57% women.
Dr. Pei's Medicare patients by age, 2024
Dr. Pei's Medicare patients by sex, 2024
- Women10253%
- Men9047%
Chronic conditions among Dr. Pei's Medicare patients, 2024
- High blood pressure74%
- High cholesterol63%
- Arthritis44%
- Anxiety35%
- Ischemic heart disease35%
- Mood disorders34%
- Chronic kidney disease32%
- Depression31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Pei's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 44
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonyean Pei wrote 202 Medicare Part D claims in 2024
In 2024, Dr. Pei wrote 202 Medicare Part D claims for 136 patients. 88% of them were for generic drugs. CMS names the drug for 77 of them, across 5 drugs with 11 or more claims each, at $484 in total drug cost. In 2023, CMS named 35 claims across 3 drugs.
Dr. Pei's Part D claims by kind of drug, 2024
- Generic177 claims88%
- Brand-name and other25 claims12%
Dr. Pei's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Pei's Part D claims, 2024
- Antibiotics40%80 of 202 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 352024: 77120%
Drugs named by CMS: 5 in 2024, 3 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Jonyean Pei takes part in Medicare
Dr. Pei accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. Jonyean Pei's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Jonyean Pei
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Jonyean Pei's NPI number?
Dr. Jonyean Pei's NPI number is 1285804633. It was assigned on March 1, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonyean Pei?
Dr. Jonyean Pei is an emergency medicine physician in Greeley, Colorado. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Jonyean Pei practice?
Dr. Pei practices at 6767 29th St, Greeley, CO 80634. Dr. Pei's primary practice is UCHealth Greeley Hospital in Greeley, Colorado, part of UCHealth. Dmand AI also links Dr. Pei to 3 hospitals, 1 breast imaging center and 1 medical group.
What is Dr. Jonyean Pei's office phone number?
The practice phone on file for Dr. Pei is (970) 652-2000.
What is Dr. Jonyean Pei's medical license number?
Dr. Pei holds Colorado license 49722, one of the licenses on file in 2 states.
Which states has Dr. Jonyean Pei been licensed in?
Dmand AI has state licenses on file for Dr. Pei in Colorado and New Jersey.
Which hospitals is Dr. Jonyean Pei affiliated with?
Dr. Pei practices at UCHealth Greeley Hospital in Greeley, Colorado. Dr. Pei is also affiliated with UCHealth Poudre Valley Hospital. Dmand AI links Dr. Pei to 3 more hospitals.
What medical group is Dr. Jonyean Pei part of?
Dr. Pei is linked to Emergency Physicians of the Rockies. Dmand AI links Dr. Pei to 1 more medical group.
Does Dr. Jonyean Pei accept Medicare?
Yes. CMS data shows Dr. Pei billed Medicare for 235 services in 2024, and Dr. Pei accepts Medicare assignment.
How many Medicare patients does Dr. Jonyean Pei see?
CMS counts 192 Medicare patients who saw Dr. Pei in 2024, with an average age of 73.
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What services does Dr. Jonyean Pei bill to Medicare?
In 2024, Dr. Pei's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
What drugs does Dr. Jonyean Pei prescribe most?
In 2024 Medicare Part D data, Dr. Pei's most prescribed drugs by claims were Prednisone, Azithromycin and Cephalexin.
How long has Dr. Jonyean Pei been practicing?
Dr. Pei graduated from medical school in 2005, 21 years ago.
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