Dr. Lonnie Herzog, MD
- Medicare services, 2024
- 5,461
- Medicare patients, 2024
- 602
- Part D claims, 2024
- 8,886
- MIPS score, 2024
- 77
- Hospital affiliations
- 6
- Practice address
- 1000 Johnson Ferry Road, NE, Atlanta, GA 30342
- Practice phone
- Call (404) 851-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Herzog's professional email, personal email and mobile number
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Dr. Lonnie Herzog is an internist in Atlanta, Georgia
Dr. Herzog practices at Northside Hospital Atlanta in Atlanta, Georgia, part of Northside Hospital.
Dr. Herzog's NPI, 1154330249, was assigned on August 7, 2006. Dr. Herzog graduated from University of Florida College of Medicine in 1982. Dr. Herzog holds Georgia license 025174.
- NPI
- 1154330249NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749227817
- NPI enumeration date
- August 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (404) 851-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lonnie Herzog practices at Northside Hospital Atlanta in Atlanta, Georgia
Dr. Herzog's primary practice is Northside Hospital Atlanta, at 1000 Johnson Ferry Road, NE, Atlanta, GA 30342 in Fulton County. The practice phone is (404) 851-8000.
- Northside Hospital Atlanta1000 Johnson Ferry Road, NE, Atlanta, GA 30342 · Fulton CountyPhone(404) 851-8000
Source: Dmand AI Affiliation Data
Dr. Lonnie Herzog is affiliated with 9 sites of care and 2 medical groups
Dr. Herzog's primary practice is Northside Hospital Atlanta in Atlanta, Georgia, part of Northside Hospital. Dr. Herzog is also affiliated with Emory Saint Joseph's Hospital. The medical group on file is Northside Hospital Primary Care. Dmand AI also links Dr. Herzog to 4 more hospitals, 2 group practices and clinics, 1 home health agency 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. Lonnie Herzog's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Herzog practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northside Hospital Atlanta | Available with a free account |
| +8 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Northside Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Lonnie Herzog is one of 3,575 internists in Georgia
Internal medicine is Dr. Herzog's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Herzog is board certified in internal medicine by the American Board of Internal Medicine. Dr. Herzog is licensed in Georgia.
Specialties and state licenses
- Internal medicine, GeorgiaPrimary
Internists near Dr. Herzog
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. Lonnie Herzog billed Medicare for 5,461 services in 2024
CMS data shows 5,461 Medicare services from Dr. Herzog across 13 procedure codes in 2024, for 602 Medicare patients. Medicare paid $189,874 for them. Every service was in an office.
Dr. Herzog's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,5172024: 2,26449%
- Surgery
- 2023: 9382024: 1,09216%
- Lab and pathology
- 2023: 8412024: 8815%
- Tests and treatments
- 2023: 5512024: 61311%
- Imaging
- 2023: 4092024: 46413%
- Other services
- 2023: 1272024: 14716%
Dr. Herzog compared with the Georgia median for internists, 2024
- Dr. Herzog
- Georgia median
- Medicare services
- 5,461vs 53610.2 times
- Medicare patients
- 602vs 1943.1 times
- Part D claims
- 8,306vs 33924.5 times
Medians across 3,344 internists in Georgia with Dmand AI profiles that report each measure.
Dr. Herzog'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. Herzog and other internists in Georgia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lonnie Herzog treated 602 Medicare patients in 2024, average age 75
CMS counts 602 Medicare patients who saw Dr. Herzog in 2024. The largest group is 65 to 74, with 328 patients. 75% of them have high cholesterol, and 64% have high blood pressure. Their average risk score is 0.74, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Herzog's median patient age at 67, with 43% women.
Dr. Herzog's Medicare patients by age, 2024
Dr. Herzog's Medicare patients by sex, 2024
- Women21335%
- Men38965%
Chronic conditions among Dr. Herzog's Medicare patients, 2024
- High cholesterol75%
- High blood pressure64%
- Ischemic heart disease43%
- Arthritis40%
- Cancer17%
- Diabetes17%
- Atrial fibrillation16%
- Anxiety13%
Share of Medicare patients with each condition. A patient can have several.
Dr. Herzog's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women43%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lonnie Herzog wrote 8,886 Medicare Part D claims in 2024
In 2024, Dr. Herzog wrote 8,886 Medicare Part D claims for 828 patients. 90% of them were for generic drugs. CMS names the drug for 8,306 of them, across 105 drugs with 11 or more claims each, at $490,645 in total drug cost. In 2023, CMS named 7,716 claims across 105 drugs.
Dr. Herzog's Part D claims by kind of drug, 2024
- Generic7,961 claims90%
- Brand-name910 claims10%
- Other15 claims0%
Dr. Herzog'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. Herzog's Part D claims, 2024
- Opioids0%41 of 8,886 claims
- Antibiotics2%136 of 8,886 claims
- Antipsychotics, patients 65 and over0%19 of 8,886 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: 7,7162024: 8,3068%
Drugs named by CMS: 105 in 2024, 105 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. Lonnie Herzog scored 77 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 77 out of 100 for Dr. Herzog for performance year 2024, reported individually. Dr. Herzog accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Herzog's MIPS scores, performance year 2024
- 77of 100Final score
- 71.8of 100Quality
- 75of 100Promoting Interoperability
- 40of 100Improvement Activities
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. Lonnie Herzog received $6,896 in industry payments from 2016 to 2025
CMS Open Payments shows 412 general payments to Dr. Herzog from 50 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $1,203.
General payments to Dr. Herzog by program year, 2016 to 2025
General payments to Dr. Herzog by kind, 2016 to 2025
- Food and beverage$6,883100%
- Education$130%
Companies that paid Dr. Herzog the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lonnie Herzog graduated from University of Florida College of Medicine
Dr. Herzog graduated from University of Florida College of Medicine in 1982.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Lonnie Herzog'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 |
| 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. Lonnie Herzog
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. Lonnie Herzog's NPI number?
Dr. Lonnie Herzog's NPI number is 1154330249. It was assigned on August 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Lonnie Herzog?
Dr. Lonnie Herzog is an internist in Atlanta, Georgia. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Lonnie Herzog practice?
Dr. Herzog practices at 1000 Johnson Ferry Road, NE, Atlanta, GA 30342. Dr. Herzog's primary practice is Northside Hospital Atlanta in Atlanta, Georgia, part of Northside Hospital. Dmand AI also links Dr. Herzog to 4 hospitals, 2 group practices and clinics, 1 home health agency and 1 medical group.
What is Dr. Lonnie Herzog's office phone number?
The practice phone on file for Dr. Herzog is (404) 851-8000.
What is Dr. Lonnie Herzog's medical license number?
Dr. Herzog holds Georgia license 025174.
Which hospitals is Dr. Lonnie Herzog affiliated with?
Dr. Herzog practices at Northside Hospital Atlanta in Atlanta, Georgia. Dr. Herzog is also affiliated with Emory Saint Joseph's Hospital. Dmand AI links Dr. Herzog to 4 more hospitals.
What medical group is Dr. Lonnie Herzog part of?
Dr. Herzog is linked to Northside Hospital Primary Care. Dmand AI links Dr. Herzog to 1 more medical group.
Does Dr. Lonnie Herzog accept Medicare?
Yes. CMS data shows Dr. Herzog billed Medicare for 5,461 services in 2024, and Dr. Herzog accepts Medicare assignment.
What is Dr. Lonnie Herzog's MIPS score?
Dr. Herzog's MIPS final score for performance year 2024 is 77 out of 100, reported individually.
How many Medicare patients does Dr. Lonnie Herzog see?
CMS counts 602 Medicare patients who saw Dr. Herzog in 2024, with an average age of 75.
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Is Dr. Lonnie Herzog board certified?
Yes. Dr. Herzog is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Lonnie Herzog bill to Medicare?
In 2024, Dr. Herzog's most billed Medicare services were surgery: heart and blood vessels (36415), care management and other visits (99490) and office visit, established patient (99214).
Where did Dr. Lonnie Herzog go to medical school?
Dr. Herzog graduated from University of Florida College of Medicine in 1982.
What drugs does Dr. Lonnie Herzog prescribe most?
In 2024 Medicare Part D data, Dr. Herzog's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Amlodipine Besylate.
Has Dr. Lonnie Herzog received payments from drug or device companies?
CMS Open Payments shows $6,896 in general payments to Dr. Herzog from 50 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Lonnie Herzog been practicing?
Dr. Herzog graduated from medical school in 1982, 44 years ago.
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