Dr. Stuart Alan Nerzig, MD
- Medicare services, 2024
- 368
- Medicare patients, 2024
- 138
- Part D claims, 2024
- 2,879
- Hospital affiliations
- 2
- Industry payments
- $22
- Practice address
- 2923 Ginnala Dr, Loveland, CO 80538
- Practice phone
- Call (970) 810-5120
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Banner Health Physicians Colorado
Loveland, Colorado
Find Dr. Nerzig's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Stuart Alan Nerzig is an internist in Loveland, Colorado
Dr. Nerzig practices at Banner Health Physicians Colorado in Loveland, Colorado.
Dr. Nerzig's NPI, 1447350996, was assigned on September 24, 2006. Dr. Nerzig holds Connecticut license 031030.
- NPI
- 1447350996NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406025030
- NPI enumeration date
- September 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (970) 810-5120
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stuart Alan Nerzig practices at Banner Health Physicians Colorado in Loveland, Colorado
Dr. Nerzig's primary practice is Banner Health Physicians Colorado, at 2923 Ginnala Dr, Loveland, CO 80538 in Larimer County. The practice phone is (970) 810-5120.
- Banner Health Physicians Colorado2923 Ginnala Dr, Loveland, CO 80538 · Larimer CountyPhone(970) 810-5120
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Stuart Alan Nerzig is affiliated with 5 sites of care and 2 medical groups
Dr. Nerzig's primary practice is Banner Health Physicians Colorado in Loveland, Colorado. Dr. Nerzig is also affiliated with Banner North Colorado Medical Center. The medical group on file is Banner Medical Group Colorado. Dmand AI also links Dr. Nerzig to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Stuart Alan Nerzig's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nerzig practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Banner Health Physicians Colorado | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stuart Alan Nerzig is one of 1,668 internists in Colorado
Internal medicine is Dr. Nerzig's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Nerzig is licensed in Connecticut.
Specialties and state licenses
- Internal medicine, ConnecticutPrimary
Internists near Dr. Nerzig
Counts of internists 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. Stuart Alan Nerzig billed Medicare for 368 services in 2024
CMS data shows 368 Medicare services from Dr. Nerzig across 8 procedure codes in 2024, for 138 Medicare patients. Medicare paid $14,524 for them. Every service was in an office.
Dr. Nerzig's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2432024: 2451%
- Other services
- 2023: 582024: 603%
- Tests and treatments
- 2023: 682024: 4632%
- Lab and pathology
- 2023: 342024: 1750%
Dr. Nerzig compared with the Colorado median for internists, 2024
- Dr. Nerzig
- Colorado median
- Medicare services
- 368vs 377Close to median
- Medicare patients
- 138vs 18626% below
- Part D claims
- 2,287vs 3187.2 times
Medians across 1,630 internists in Colorado with Dmand AI profiles that report each measure.
Dr. Nerzig'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.
Need commercial claims for Dr. Nerzig?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nerzig and other internists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stuart Alan Nerzig treated 138 Medicare patients in 2024, average age 77
CMS counts 138 Medicare patients who saw Dr. Nerzig in 2024. The largest group is 65 to 74, with 51 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nerzig's median patient age at 72, with 43% women.
Dr. Nerzig's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Nerzig's Medicare patients by sex, 2024
- Women6648%
- Men7252%
Chronic conditions among Dr. Nerzig's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Chronic kidney disease31%
- Ischemic heart disease28%
- Diabetes21%
- Atrial fibrillation20%
- COPD20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nerzig's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stuart Alan Nerzig wrote 2,879 Medicare Part D claims in 2024
In 2024, Dr. Nerzig wrote 2,879 Medicare Part D claims for 321 patients. 88% of them were for generic drugs. CMS names the drug for 2,287 of them, across 61 drugs with 11 or more claims each, at $125,767 in total drug cost. In 2023, CMS named 1,853 claims across 56 drugs.
Dr. Nerzig's Part D claims by kind of drug, 2024
- Generic2,543 claims88%
- Brand-name315 claims11%
- Other21 claims1%
Dr. Nerzig'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. Nerzig's Part D claims, 2024
- Antibiotics2%47 of 2,879 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: 1,8532024: 2,28723%
Drugs named by CMS: 61 in 2024, 56 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. Stuart Alan Nerzig takes part in Medicare
Dr. Nerzig 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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Dr. Stuart Alan Nerzig received $22 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Nerzig from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Purdue Pharma L.P. paid the most, $22.
Companies that paid Dr. Nerzig the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Stuart Alan Nerzig'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| Industry payments | Open Payments (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. Stuart Alan Nerzig
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. Stuart Alan Nerzig's NPI number?
Dr. Stuart Alan Nerzig's NPI number is 1447350996. It was assigned on September 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stuart Alan Nerzig?
Dr. Stuart Alan Nerzig is an internist in Loveland, Colorado. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Stuart Alan Nerzig practice?
Dr. Nerzig practices at 2923 Ginnala Dr, Loveland, CO 80538. Dr. Nerzig's primary practice is Banner Health Physicians Colorado in Loveland, Colorado. Dmand AI also links Dr. Nerzig to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Stuart Alan Nerzig's office phone number?
The practice phone on file for Dr. Nerzig is (970) 810-5120.
What is Dr. Stuart Alan Nerzig's medical license number?
Dr. Nerzig holds Connecticut license 031030.
Which hospitals is Dr. Stuart Alan Nerzig affiliated with?
Dr. Nerzig is affiliated with Banner North Colorado Medical Center. Dmand AI links Dr. Nerzig to 1 more hospital.
What medical group is Dr. Stuart Alan Nerzig part of?
Dr. Nerzig is linked to Banner Medical Group Colorado. Dmand AI links Dr. Nerzig to 1 more medical group.
Does Dr. Stuart Alan Nerzig accept Medicare?
Yes. CMS data shows Dr. Nerzig billed Medicare for 368 services in 2024, and Dr. Nerzig accepts Medicare assignment.
How many Medicare patients does Dr. Stuart Alan Nerzig see?
CMS counts 138 Medicare patients who saw Dr. Nerzig in 2024, with an average age of 77.
What services does Dr. Stuart Alan Nerzig bill to Medicare?
In 2024, Dr. Nerzig's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
Show 3 more questionsShow fewer questions
What drugs does Dr. Stuart Alan Nerzig prescribe most?
In 2024 Medicare Part D data, Dr. Nerzig's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Levothyroxine Sodium.
Has Dr. Stuart Alan Nerzig received payments from drug or device companies?
CMS Open Payments shows $22 in general payments to Dr. Nerzig from 1 company from 2016 to 2016. The largest total came from Purdue Pharma L.P.
How long has Dr. Stuart Alan Nerzig been practicing?
Dr. Nerzig graduated from medical school in 1987, 39 years ago.
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