Dr. Rudolf Erich Herzog, MD

  • San Diego, CA
  • Internist
NPI1861599466PAC ID4486686342
Medicare services, 2024
420
Medicare patients, 2024
140
Part D claims, 2024
126
Publications
3
Hospital affiliations
1
Practice address
4077 5th Ave, San Diego, CA 92103
Practice phone
Call (619) 294-8111
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Scripps Mercy Hospital San Diego

Hospital · San Diego, California

See all 3 affiliations

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Dr. Rudolf Erich Herzog is an internist in San Diego, California

Dr. Herzog practices at Scripps Mercy Hospital San Diego in San Diego, California, part of Scripps Health.

Dr. Herzog's NPI, 1861599466, was assigned on September 19, 2006. Dr. Herzog graduated from Saint Louis University School Of Medicine in 1991. Dr. Herzog holds California license G77598.

NPI and contact details
Medicare PAC ID
4486686342
NPI enumeration date
September 19, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(619) 294-8111
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
61
Medical school graduation
1991

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

Dr. Rudolf Erich Herzog practices at Scripps Mercy Hospital San Diego in San Diego, California

Dr. Herzog's primary practice is Scripps Mercy Hospital San Diego, at 4077 5th Ave, San Diego, CA 92103 in San Diego County. The practice phone is (619) 294-8111.

Source: Dmand AI Affiliation Data

Dr. Rudolf Erich Herzog is affiliated with 1 site of care and 2 medical groups

Dr. Herzog's primary practice is Scripps Mercy Hospital San Diego in San Diego, California, part of Scripps Health. The medical group on file is Emergency and Acute Care Medical Corporation. Dmand AI also links Dr. Herzog to 1 more medical group, named with a free account.

See all 3 affiliations for Dr. Herzog

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

Dmand AI tracks the EHR system at Dr. Rudolf Erich Herzog's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Herzog practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Scripps Mercy Hospital San DiegoAvailable with a free account
+1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Rudolf Erich Herzog is one of 16,751 internists in California

Internal medicine is Dr. Herzog's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Herzog is licensed in California.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense G77598 · 1993 to 2027 · taxonomy 207R00000X

Clinical focus

Dmand AI lists atrial fibrillation and flutter, bile duct problems, cellulitis, chronic diabetes, congestive heart failure, coronary artery disease, gastrointestinal inflammation and hypertension among the conditions Dr. Herzog treats.

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. Rudolf Erich Herzog billed Medicare for 420 services in 2024

CMS data shows 420 Medicare services from Dr. Herzog across 5 procedure codes in 2024, for 140 Medicare patients. Medicare paid $26,499 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024420
Medicare patients140
Paid by Medicare$26,499
Procedure codes5

Dr. Herzog's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 4442024: 4205%

Dr. Herzog compared with the California median for internists, 2024

  • Dr. Herzog
  • California median
Medicare services
420vs 36116% above
Medicare patients
140vs 1517% below
Part D claims
98vs 42177% below

Medians across 15,815 internists in California 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.

See all procedures by Dr. Herzog

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

Dr. Rudolf Erich Herzog treated 140 Medicare patients in 2024, average age 74

CMS counts 140 Medicare patients who saw Dr. Herzog in 2024. The largest group is 65 to 74, with 52 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 54% are also on Medicaid. Their average risk score is 2.59, 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. Herzog's median patient age at 70, with 36% women.

Medicare patients, 2024140
Average age74
Average risk score2.59
Also on Medicaid54%

Dr. Herzog's Medicare patients by age, 2024

Dr. Herzog's Medicare patients by sex, 2024

  • Women5439%
  • Men8661%

Chronic conditions among Dr. Herzog's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis49%
  4. Diabetes47%
  5. Mood disorders46%
  6. Ischemic heart disease45%
  7. Heart failure44%
  8. Atrial fibrillation41%

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 70

Patient panel by sex, all payers

  • Women36%
  • Men64%

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

Dr. Rudolf Erich Herzog wrote 126 Medicare Part D claims in 2024

In 2024, Dr. Herzog wrote 126 Medicare Part D claims for 54 patients. 86% of them were for generic drugs. CMS names the drug for 98 of them, across 7 drugs with 11 or more claims each, at $1,431 in total drug cost. In 2018, CMS named 2,409 claims across 72 drugs.

Part D claims, 2024126
Drugs named by CMS7
Total drug cost$1,431
Part D patients54

Dr. Herzog's Part D claims by kind of drug, 2024

  • Generic108 claims86%
  • Brand-name and other18 claims14%

Dr. Herzog's most prescribed drugs by claims, 2019

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

  • Opioids17%21 of 126 claims
  • Antibiotics18%23 of 126 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, 2018 to 2019

  • 2018
  • 2019
Claims for drugs CMS names
2018: 2,4092019: 9896%

Drugs named by CMS: 7 in 2019, 72 in 2018.

See all prescribing by Dr. Herzog

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. Rudolf Erich Herzog takes part in Medicare

Dr. Herzog 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. Rudolf Erich Herzog has 3 publications on record

Dmand AI links 3 papers to Dr. Herzog, published from 2015 to 2018. The most frequent topics are Antibodies, Heart Transplantation and Swine. Dr. Herzog has published most often in Nature.

Papers3
Years published2015 to 2018

Topics Dr. Herzog writes about most

  • Antibodies
  • Heart Transplantation
  • Swine
  • Transplantation, Heterologous

Recent publications by Dr. Herzog

See all 3 publications and co-authors

See who Dr. Herzog researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Herzog works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Rudolf Erich Herzog received $116 in industry payments in 2017

CMS Open Payments shows 2 general payments to Dr. Herzog from 2 drug and device companies in 2017. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $92.

Companies that paid Dr. Herzog the most, 2017 to 2017

Share is of all general payments to this clinician.

See all payments to Dr. Herzog

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

Dr. Rudolf Erich Herzog graduated from Saint Louis University School Of Medicine

Dr. Herzog graduated from Saint Louis University School Of Medicine in 1991.

  1. Medical schoolSaint Louis University School Of Medicine

Source: Dmand AI Professional Profile Data

Dr. Rudolf Erich Herzog accepts plans from 3 insurance carriers

Dr. Herzog is in network with 3 carriers, including Blue Cross Blue Shield of Massachusetts, HCSC and CMS Medicare. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • CMS Medicare

Plan types Dr. Herzog accepts, by number of carriers

  1. Medicare3
  2. PPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. Rudolf Erich Herzog'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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network 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 Dr. Rudolf Erich 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. Rudolf Erich Herzog's NPI number?

Dr. Rudolf Erich Herzog's NPI number is 1861599466. It was assigned on September 19, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Rudolf Erich Herzog?

Dr. Rudolf Erich Herzog is an internist in San Diego, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Rudolf Erich Herzog practice?

Dr. Herzog practices at 4077 5th Ave, San Diego, CA 92103. Dr. Herzog's primary practice is Scripps Mercy Hospital San Diego in San Diego, California, part of Scripps Health. Dmand AI also links Dr. Herzog to 1 medical group.

What is Dr. Rudolf Erich Herzog's office phone number?

The practice phone on file for Dr. Herzog is (619) 294-8111.

What is Dr. Rudolf Erich Herzog's medical license number?

Dr. Herzog holds California license G77598.

Which hospitals is Dr. Rudolf Erich Herzog affiliated with?

Dr. Herzog practices at Scripps Mercy Hospital San Diego in San Diego, California.

What medical group is Dr. Rudolf Erich Herzog part of?

Dr. Herzog is linked to Emergency and Acute Care Medical Corporation. Dmand AI links Dr. Herzog to 1 more medical group.

Does Dr. Rudolf Erich Herzog accept Medicare?

Yes. CMS data shows Dr. Herzog billed Medicare for 420 services in 2024, and Dr. Herzog accepts Medicare assignment.

How many Medicare patients does Dr. Rudolf Erich Herzog see?

CMS counts 140 Medicare patients who saw Dr. Herzog in 2024, with an average age of 74.

What services does Dr. Rudolf Erich Herzog bill to Medicare?

In 2024, Dr. Herzog's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99231) and hospital inpatient care (99238).

Show 6 more questionsShow fewer questions

Where did Dr. Rudolf Erich Herzog go to medical school?

Dr. Herzog graduated from Saint Louis University School Of Medicine in 1991.

What drugs does Dr. Rudolf Erich Herzog prescribe most?

In 2019 Medicare Part D data, Dr. Herzog's most prescribed drugs by claims were Atorvastatin Calcium, Hydrocodone-Acetaminophen and Citalopram HBr.

Has Dr. Rudolf Erich Herzog received payments from drug or device companies?

CMS Open Payments shows $116 in general payments to Dr. Herzog from 2 companies from 2017 to 2017. The largest total came from Sanofi and Genzyme US Companies.

How long has Dr. Rudolf Erich Herzog been practicing?

Dr. Herzog graduated from medical school in 1991, 35 years ago.

Does Dr. Rudolf Erich Herzog do research?

Dmand AI links 3 publications to Dr. Herzog, published from 2015 to 2018.

What insurance does Dr. Rudolf Erich Herzog accept?

Dr. Herzog is in network with 3 carriers, including Blue Cross Blue Shield of Massachusetts, HCSC and CMS Medicare. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.

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