Stephen Nunenmacher

  • Biloxi, MS
  • Emergency medicine physician
NPI1487705042PAC ID8022140334
Medicare services, 2024
229
Medicare patients, 2024
78
Part D claims, 2024
15,460
Hospital affiliations
2
Industry payments
$28
Practice address
400 Veterans Avenue, Biloxi, MS 39531
Practice phone
Call (228) 523-5000
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Biloxi VA Medical Center

Hospital · Biloxi, Mississippi

See all 7 affiliations

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Stephen Nunenmacher is an emergency medicine physician in Biloxi, Mississippi

Stephen Nunenmacher practices at Biloxi VA Medical Center in Biloxi, Mississippi, part of Veterans Health Administration.

Stephen Nunenmacher's NPI, 1487705042, was assigned on January 12, 2007. Stephen Nunenmacher graduated from University of Mississippi School of Medicine in 1989. Stephen Nunenmacher holds Mississippi license MS12528.

NPI and contact details
Medicare PAC ID
8022140334
NPI enumeration date
January 12, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(228) 523-5000
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
63
Medical school graduation
1989

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Stephen Nunenmacher practices at Biloxi VA Medical Center in Biloxi, Mississippi

Stephen Nunenmacher's primary practice is Biloxi VA Medical Center, at 400 Veterans Avenue, Biloxi, MS 39531 in Harrison County. The practice phone is (228) 523-5000.

Source: Dmand AI Affiliation Data

Stephen Nunenmacher is affiliated with 4 sites of care and 3 medical groups

Stephen Nunenmacher's primary practice is Biloxi VA Medical Center in Biloxi, Mississippi, part of Veterans Health Administration. Stephen Nunenmacher is also affiliated with Pascagoula Hospital. The medical group on file is Singing River Health System. Dmand AI also links Stephen Nunenmacher to 2 more medical groups, 1 physician office and 1 skilled nursing facility, each named with a free account.

See all 7 affiliations for Stephen Nunenmacher

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Stephen Nunenmacher's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Stephen Nunenmacher practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Biloxi VA Medical CenterAvailable with a free account
+3 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Stephen Nunenmacher is one of 400 emergency medicine physicians in Mississippi

Emergency medicine is Stephen Nunenmacher's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Stephen Nunenmacher is licensed in Mississippi.

Specialties and state licenses

  • Emergency medicine, MississippiPrimaryLicense MS12528 · taxonomy 207P00000X

Emergency medicine physicians near Stephen Nunenmacher

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

Stephen Nunenmacher billed Medicare for 229 services in 2024

CMS data shows 229 Medicare services from Stephen Nunenmacher across 2 procedure codes in 2024, for 78 Medicare patients. Medicare paid $12,065 for them.

Medicare services, 2024229
Medicare patients78
Paid by Medicare$12,065
Procedure codes2

Stephen Nunenmacher's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2552024: 22910%

Where Stephen Nunenmacher's Medicare services took place, 2024

  • In an office21895%
  • In a facility115%

Stephen Nunenmacher compared with the Mississippi median for emergency medicine physicians, 2024

  • Stephen Nunenmacher
  • Mississippi median
Medicare services
229vs 39242% below
Medicare patients
78vs 36479% below
Part D claims
15,096vs 112134.8 times

Medians across 383 emergency medicine physicians in Mississippi with Dmand AI profiles that report each measure.

Stephen Nunenmacher'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.

See all procedures by Stephen Nunenmacher

Need commercial claims for Stephen Nunenmacher?

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Stephen Nunenmacher treated 78 Medicare patients in 2024, average age 82

CMS counts 78 Medicare patients who saw Stephen Nunenmacher in 2024. The largest group is 85 and over, with 31 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 59% are also on Medicaid. Their average risk score is 1.96, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Stephen Nunenmacher's median patient age at 81, with 60% women.

Medicare patients, 202478
Average age82
Average risk score1.96
Also on Medicaid59%

Stephen Nunenmacher's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Stephen Nunenmacher's Medicare patients by sex, 2024

  • Women5571%
  • Men2329%

Chronic conditions among Stephen Nunenmacher's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Mood disorders69%
  4. Depression65%
  5. Arthritis60%
  6. Alzheimer's and dementia55%
  7. Chronic kidney disease47%
  8. Heart failure47%

Share of Medicare patients with each condition. A patient can have several.

Stephen Nunenmacher's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 81

Patient panel by sex, all payers

  • Women60%
  • Men40%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Stephen Nunenmacher wrote 15,460 Medicare Part D claims in 2024

In 2024, Stephen Nunenmacher wrote 15,460 Medicare Part D claims for 65 patients. 90% of them were for generic drugs. CMS names the drug for 15,096 of them, across 127 drugs with 11 or more claims each, at $340,416 in total drug cost. In 2023, CMS named 19,111 claims across 148 drugs.

Part D claims, 202415,460
Drugs named by CMS127
Total drug cost$340,416
Part D patients65

Stephen Nunenmacher's Part D claims by kind of drug, 2024

  • Generic13,860 claims90%
  • Brand-name and other1,600 claims10%

Stephen Nunenmacher'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 Stephen Nunenmacher's Part D claims, 2024

  • Antibiotics1%112 of 15,460 claims
  • Antipsychotics, patients 65 and over2%238 of 15,460 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: 19,1112024: 15,09621%

Drugs named by CMS: 127 in 2024, 148 in 2023.

See all prescribing by Stephen Nunenmacher

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 Stephen Nunenmacher takes part in Medicare

Stephen Nunenmacher 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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Stephen Nunenmacher received $28 in industry payments from 2020 to 2021

CMS Open Payments shows 2 general payments to Stephen Nunenmacher from 2 drug and device companies from 2020 to 2021. Food and beverage make up the largest share, 100% of the total. Alexion Pharmaceuticals, Inc. paid the most, $15.

General payments to Stephen Nunenmacher by program year, 2020 to 2021

Companies that paid Stephen Nunenmacher the most, 2020 to 2021

Share is of all general payments to this clinician.

See all payments to Stephen Nunenmacher

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Stephen Nunenmacher graduated from University of Mississippi School of Medicine

Stephen Nunenmacher graduated from University of Mississippi School of Medicine in 1989.

  1. Medical schoolUniversity of Mississippi School of Medicine

Source: Dmand AI Professional Profile Data

Sources for Stephen Nunenmacher's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Stephen Nunenmacher

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Stephen Nunenmacher's NPI number?

Stephen Nunenmacher's NPI number is 1487705042. It was assigned on January 12, 2007, and it is active in the NPI Registry.

What does Stephen Nunenmacher specialize in?

Stephen Nunenmacher is an emergency medicine physician in Biloxi, Mississippi. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Stephen Nunenmacher practice?

Stephen Nunenmacher practices at 400 Veterans Avenue, Biloxi, MS 39531. Stephen Nunenmacher's primary practice is Biloxi VA Medical Center in Biloxi, Mississippi, part of Veterans Health Administration. Dmand AI also links Stephen Nunenmacher to 2 medical groups, 1 physician office and 1 skilled nursing facility.

What is Stephen Nunenmacher's office phone number?

The practice phone on file for Stephen Nunenmacher is (228) 523-5000.

What is Stephen Nunenmacher's medical license number?

Stephen Nunenmacher holds Mississippi license MS12528.

Which hospitals is Stephen Nunenmacher affiliated with?

Stephen Nunenmacher practices at Biloxi VA Medical Center in Biloxi, Mississippi. Stephen Nunenmacher is also affiliated with Pascagoula Hospital.

What medical group is Stephen Nunenmacher part of?

Stephen Nunenmacher is linked to Singing River Health System. Dmand AI links Stephen Nunenmacher to 2 more medical groups.

Does Stephen Nunenmacher accept Medicare?

Yes. CMS data shows Stephen Nunenmacher billed Medicare for 229 services in 2024, and Stephen Nunenmacher accepts Medicare assignment.

How many Medicare patients does Stephen Nunenmacher see?

CMS counts 78 Medicare patients who saw Stephen Nunenmacher in 2024, with an average age of 82.

What services does Stephen Nunenmacher bill to Medicare?

In 2024, Stephen Nunenmacher's most billed Medicare services were nursing facility care (99308) and nursing facility care (99304).

Show 4 more questionsShow fewer questions

Where did Stephen Nunenmacher go to medical school?

Stephen Nunenmacher graduated from University of Mississippi School of Medicine in 1989.

What drugs does Stephen Nunenmacher prescribe most?

In 2024 Medicare Part D data, Stephen Nunenmacher's most prescribed drugs by claims were Levothyroxine Sodium, Potassium Chloride and Furosemide.

Has Stephen Nunenmacher received payments from drug or device companies?

CMS Open Payments shows $28 in general payments to Stephen Nunenmacher from 2 companies from 2020 to 2021. The largest total came from Alexion Pharmaceuticals, Inc.

How long has Stephen Nunenmacher been practicing?

Stephen Nunenmacher graduated from medical school in 1989, 37 years ago.

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