Dr. John R. Loudermilk, MD
- Medicare services, 2024
- 288
- Medicare patients, 2024
- 215
- Part D claims, 2024
- 118
- MIPS score, 2024
- 97
- Hospital affiliations
- 3
- Practice address
- 4001 J St, Sacramento, CA 95819
- Practice phone
- Call (916) 453-4453
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Loudermilk'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. John R. Loudermilk is an emergency medicine physician in Sacramento, California
Dr. Loudermilk practices at Dignity Health - Mercy General Hospital in Sacramento, California, part of CommonSpirit Health.
Dr. Loudermilk's NPI, 1366582264, was assigned on February 8, 2007. Dr. Loudermilk graduated from UT Southwestern Medical Center in 1981. Dr. Loudermilk holds California license C40700.
- NPI
- 1366582264NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7012071210
- NPI enumeration date
- February 8, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (916) 453-4453
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John R. Loudermilk practices at Dignity Health - Mercy General Hospital in Sacramento, California
Dr. Loudermilk's primary practice is Dignity Health - Mercy General Hospital, at 4001 J St, Sacramento, CA 95819 in Sacramento County. The practice phone is (916) 453-4453.
- Dignity Health - Mercy General Hospital4001 J St, Sacramento, CA 95819 · Sacramento CountyPhone(916) 453-4453
Source: Dmand AI Affiliation Data
Dr. John R. Loudermilk is affiliated with 3 sites of care and 1 medical group
Dr. Loudermilk's primary practice is Dignity Health - Mercy General Hospital in Sacramento, California, part of CommonSpirit Health. Dr. Loudermilk is also affiliated with Dignity Health - Mercy San Juan Medical Center. The medical group on file is Vituity. Dmand AI also links Dr. Loudermilk to 1 more hospital, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John R. Loudermilk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Loudermilk practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - Mercy General Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John R. Loudermilk is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Loudermilk's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Loudermilk is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Loudermilk's licenses on file in 3 states: California, Oregon and Texas.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Oregon license
- Texas license
Emergency medicine physicians near Dr. Loudermilk
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. John R. Loudermilk billed Medicare for 288 services in 2024
CMS data shows 288 Medicare services from Dr. Loudermilk across 4 procedure codes in 2024, for 215 Medicare patients. Medicare paid $28,010 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Loudermilk's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2442024: 20715%
- Tests and treatments
- 2023: 1152024: 8130%
Dr. Loudermilk compared with the California median for emergency medicine physicians, 2024
- Dr. Loudermilk
- California median
- Medicare services
- 288vs 2659% above
- Medicare patients
- 215vs 24312% below
- Part D claims
- 46vs 6226% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Loudermilk'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Loudermilk and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John R. Loudermilk treated 215 Medicare patients in 2024, average age 72
CMS counts 215 Medicare patients who saw Dr. Loudermilk in 2024. The largest group is 65 to 74, with 77 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 60% are also on Medicaid. Their average risk score is 2.64, 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. Loudermilk's median patient age at 55, with 56% women.
Dr. Loudermilk's Medicare patients by age, 2024
Dr. Loudermilk's Medicare patients by sex, 2024
- Women11654%
- Men9946%
Chronic conditions among Dr. Loudermilk's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Diabetes45%
- Mood disorders45%
- Anxiety41%
- Chronic kidney disease40%
- Depression39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Loudermilk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John R. Loudermilk wrote 118 Medicare Part D claims in 2024
In 2024, Dr. Loudermilk wrote 118 Medicare Part D claims for 84 patients. 96% of them were for generic drugs. CMS names the drug for 46 of them, across 3 drugs with 11 or more claims each, at $306 in total drug cost. In 2023, CMS named 12 claims across 1 drug.
Dr. Loudermilk's Part D claims by kind of drug, 2024
- Generic113 claims96%
- Brand-name and other5 claims4%
Dr. Loudermilk'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. Loudermilk's Part D claims, 2024
- Opioids12%14 of 118 claims
- Antibiotics50%59 of 118 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: 122024: 46283%
Drugs named by CMS: 3 in 2024, 1 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
Dr. John R. Loudermilk scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Loudermilk for performance year 2024, reported as part of a group. Dr. Loudermilk accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Loudermilk's MIPS scores, performance year 2024
- 97of 100Final score
- 90of 100Quality
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John R. Loudermilk received $38 in industry payments from 2017 to 2022
CMS Open Payments shows 3 general payments to Dr. Loudermilk from 2 drug and device companies from 2017 to 2022. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $23.
General payments to Dr. Loudermilk by program year, 2017 to 2022
Companies that paid Dr. Loudermilk the most, 2017 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John R. Loudermilk graduated from UT Southwestern Medical Center
Dr. Loudermilk graduated from UT Southwestern Medical Center in 1981.
- Medical school
- Board certified in emergency medicine
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. John R. Loudermilk accepts plans from 2 insurance carriers
Dr. Loudermilk is in network with 2 carriers, including CMS Medicare and GA State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
- GA State Medicaid
Plan types Dr. Loudermilk accepts, by number of carriers
- Medicaid1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. John R. Loudermilk'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| 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. John R. Loudermilk
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. John R. Loudermilk's NPI number?
Dr. John R. Loudermilk's NPI number is 1366582264. It was assigned on February 8, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. John R. Loudermilk?
Dr. John R. Loudermilk is an emergency medicine physician in Sacramento, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. John R. Loudermilk practice?
Dr. Loudermilk practices at 4001 J St, Sacramento, CA 95819. Dr. Loudermilk's primary practice is Dignity Health - Mercy General Hospital in Sacramento, California, part of CommonSpirit Health. Dmand AI also links Dr. Loudermilk to 1 hospital.
What is Dr. John R. Loudermilk's office phone number?
The practice phone on file for Dr. Loudermilk is (916) 453-4453.
What is Dr. John R. Loudermilk's medical license number?
Dr. Loudermilk holds California license C40700, one of the licenses on file in 3 states.
Which states has Dr. John R. Loudermilk been licensed in?
Dmand AI has state licenses on file for Dr. Loudermilk in California (1982 to 2026), Oregon (since 1984) and Texas (1981 to 1987).
Which hospitals is Dr. John R. Loudermilk affiliated with?
Dr. Loudermilk practices at Dignity Health - Mercy General Hospital in Sacramento, California. Dr. Loudermilk is also affiliated with Dignity Health - Mercy San Juan Medical Center. Dmand AI links Dr. Loudermilk to 1 more hospital.
What medical group is Dr. John R. Loudermilk part of?
Dr. Loudermilk is linked to Vituity.
Does Dr. John R. Loudermilk accept Medicare?
Yes. CMS data shows Dr. Loudermilk billed Medicare for 288 services in 2024, and Dr. Loudermilk accepts Medicare assignment.
What is Dr. John R. Loudermilk's MIPS score?
Dr. Loudermilk's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. John R. Loudermilk see?
CMS counts 215 Medicare patients who saw Dr. Loudermilk in 2024, with an average age of 72.
Is Dr. John R. Loudermilk board certified?
Yes. Dr. Loudermilk is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. John R. Loudermilk bill to Medicare?
In 2024, Dr. Loudermilk's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Where did Dr. John R. Loudermilk go to medical school?
Dr. Loudermilk graduated from UT Southwestern Medical Center in 1981.
What drugs does Dr. John R. Loudermilk prescribe most?
In 2024 Medicare Part D data, Dr. Loudermilk's most prescribed drugs by claims were Cephalexin, Sulfamethoxazole-Trimethoprim and Hydrocodone-Acetaminophen.
Has Dr. John R. Loudermilk received payments from drug or device companies?
CMS Open Payments shows $38 in general payments to Dr. Loudermilk from 2 companies from 2017 to 2022. The largest total came from Allergan Inc.
How long has Dr. John R. Loudermilk been practicing?
Dr. Loudermilk graduated from medical school in 1981, 45 years ago.
What insurance does Dr. John R. Loudermilk accept?
Dr. Loudermilk is in network with 2 carriers, including CMS Medicare and GA State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
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