Dr. Charles E. Hergesheimer, MD
- Medicare services, 2024
- 4,503
- Medicare patients, 2024
- 494
- Part D claims, 2024
- 8,787
- Hospital affiliations
- 2
- Industry payments
- $281
- Practice address
- 910 Sycamore Ave, Vista, CA 92081
- Practice phone
- Call (858) 249-5908
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UC San Diego Health Community Group
Vista, California
Find Dr. Hergesheimer'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. Charles E. Hergesheimer is an internist in Vista, California
Dr. Hergesheimer practices at UC San Diego Health Community Group in Vista, California.
Dr. Hergesheimer's NPI, 1508892860, was assigned on June 25, 2006. Dr. Hergesheimer graduated from UC Irvine School of Medicine in 1991. Dr. Hergesheimer holds California license G76058.
- NPI
- 1508892860NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8820139710
- NPI enumeration date
- June 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (858) 249-5908
- 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 Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles E. Hergesheimer practices at UC San Diego Health Community Group in Vista, California
Dr. Hergesheimer's primary practice is UC San Diego Health Community Group, at 910 Sycamore Ave, Vista, CA 92081 in San Diego County. The practice phone is (858) 249-5908.
- UC San Diego Health Community Group910 Sycamore Ave, Vista, CA 92081 · San Diego CountyPhone(858) 249-5908
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Charles E. Hergesheimer is affiliated with 9 sites of care and 2 medical groups
Dr. Hergesheimer's primary practice is UC San Diego Health Community Group in Vista, California. Dr. Hergesheimer is also affiliated with Hillcrest Medical Center. The medical group on file is UC San Diego Health. Dmand AI also links Dr. Hergesheimer to 1 more hospital, 5 home health agencies, 1 hospice and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Charles E. Hergesheimer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hergesheimer practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UC San Diego Health Community Group | Available with a free account |
| +8 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Charles E. Hergesheimer is one of 16,751 internists in California
Internal medicine is Dr. Hergesheimer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hergesheimer is board certified in internal medicine by the American Board of Internal Medicine. Dr. Hergesheimer is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute mini-stroke (TIA), acute skin infection, adjustment disease, alzheimer's disease, aneurysm, aortic atherosclerois and arteritis among the conditions Dr. Hergesheimer treats.
Internists near Dr. Hergesheimer
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. Charles E. Hergesheimer billed Medicare for 4,503 services in 2024
CMS data shows 4,503 Medicare services from Dr. Hergesheimer across 20 procedure codes in 2024, for 494 Medicare patients. Medicare paid $119,323 for them. Every service was in an office.
Dr. Hergesheimer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 2,5262024: 2,4921%
- Other services
- 2023: 5312024: 85361%
- Office and hospital visits
- 2023: 8972024: 80111%
- Surgery
- 2023: 1692024: 1807%
- Tests and treatments
- 2023: 2392024: 15834%
- Lab and pathology
- 2023: 02024: 19
Dr. Hergesheimer compared with the California median for internists, 2024
- Dr. Hergesheimer
- California median
- Medicare services
- 4,503vs 36112.5 times
- Medicare patients
- 494vs 1513.3 times
- Part D claims
- 7,946vs 42118.9 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Hergesheimer'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. Hergesheimer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hergesheimer and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles E. Hergesheimer treated 494 Medicare patients in 2024, average age 77
CMS counts 494 Medicare patients who saw Dr. Hergesheimer in 2024. The largest group is 75 to 84, with 210 patients. 75% of them have high cholesterol, and 60% have high blood pressure. 5% are also on Medicaid. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hergesheimer's median patient age at 73, with 47% women.
Dr. Hergesheimer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Hergesheimer's Medicare patients by sex, 2024
- Women23948%
- Men25552%
Chronic conditions among Dr. Hergesheimer's Medicare patients, 2024
- High cholesterol75%
- High blood pressure60%
- Arthritis44%
- Ischemic heart disease28%
- Atrial fibrillation19%
- Cancer18%
- Diabetes18%
- Chronic kidney disease16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hergesheimer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Charles E. Hergesheimer wrote 8,787 Medicare Part D claims in 2024
In 2024, Dr. Hergesheimer wrote 8,787 Medicare Part D claims for 707 patients. 87% of them were for generic drugs. CMS names the drug for 7,946 of them, across 162 drugs with 11 or more claims each, at $795,617 in total drug cost. In 2023, CMS named 7,634 claims across 166 drugs.
Dr. Hergesheimer's Part D claims by kind of drug, 2024
- Generic7,680 claims87%
- Brand-name1,079 claims12%
- Other28 claims0%
Dr. Hergesheimer'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. Hergesheimer's Part D claims, 2024
- Opioids5%474 of 8,787 claims
- Antibiotics3%268 of 8,787 claims
- Antipsychotics, patients 65 and over1%87 of 8,787 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: 7,6342024: 7,9464%
Drugs named by CMS: 162 in 2024, 166 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. Charles E. Hergesheimer ranks in the 66th percentile for removal of skin lesions in Medicare
Dr. Hergesheimer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Hergesheimer as offering telehealth. CMS counts 22 procedures of removal of skin lesions by Dr. Hergesheimer, more than 66% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Hergesheimer ranks in Medicare procedure volume
- Removal of skin lesions
- 66th percentile22 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Charles E. Hergesheimer received $281 in industry payments from 2016 to 2025
CMS Open Payments shows 18 general payments to Dr. Hergesheimer from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Astellas Pharma US Inc paid the most, $35.
General payments to Dr. Hergesheimer by program year, 2016 to 2025
Companies that paid Dr. Hergesheimer 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. Charles E. Hergesheimer has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Hergesheimer, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Hergesheimer
- 2013
- CMS Stage 1 EHR
- Undated
- AOA
Source: Dmand AI Professional Profile Data
Dr. Charles E. Hergesheimer graduated from UC Irvine School of Medicine
Dr. Hergesheimer graduated from UC Irvine School of Medicine in 1991. Dr. Hergesheimer is a member of AOA and ACP.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Charles E. Hergesheimer accepts plans from 15 insurance carriers
Dr. Hergesheimer is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- Humana
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- +7 more carriersWith a free account
Plan types Dr. Hergesheimer accepts, by number of carriers
- PPO10
- Medicare8
- HMO7
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Charles E. Hergesheimer'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 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Charles E. Hergesheimer
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. Charles E. Hergesheimer's NPI number?
Dr. Charles E. Hergesheimer's NPI number is 1508892860. It was assigned on June 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles E. Hergesheimer?
Dr. Charles E. Hergesheimer is an internist in Vista, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Charles E. Hergesheimer practice?
Dr. Hergesheimer practices at 910 Sycamore Ave, Vista, CA 92081. Dr. Hergesheimer's primary practice is UC San Diego Health Community Group in Vista, California. Dmand AI also links Dr. Hergesheimer to 1 hospital, 5 home health agencies, 1 hospice and 1 medical group.
What is Dr. Charles E. Hergesheimer's office phone number?
The practice phone on file for Dr. Hergesheimer is (858) 249-5908.
What is Dr. Charles E. Hergesheimer's medical license number?
Dr. Hergesheimer holds California license G76058.
Which hospitals is Dr. Charles E. Hergesheimer affiliated with?
Dr. Hergesheimer is affiliated with Hillcrest Medical Center. Dmand AI links Dr. Hergesheimer to 1 more hospital.
What medical group is Dr. Charles E. Hergesheimer part of?
Dr. Hergesheimer is linked to UC San Diego Health. Dmand AI links Dr. Hergesheimer to 1 more medical group.
Does Dr. Charles E. Hergesheimer accept Medicare?
Yes. CMS data shows Dr. Hergesheimer billed Medicare for 4,503 services in 2024, and Dr. Hergesheimer accepts Medicare assignment.
Does Dr. Charles E. Hergesheimer offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Hergesheimer as offering telehealth services.
How many Medicare patients does Dr. Charles E. Hergesheimer see?
CMS counts 494 Medicare patients who saw Dr. Hergesheimer in 2024, with an average age of 77.
Show 7 more questionsShow fewer questions
Is Dr. Charles E. Hergesheimer board certified?
Yes. Dr. Hergesheimer is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Charles E. Hergesheimer bill to Medicare?
In 2024, Dr. Hergesheimer's most billed Medicare services were injected or infused drug (J0897), injected or infused drug (J3301) and medicare service (G2211).
Where did Dr. Charles E. Hergesheimer go to medical school?
Dr. Hergesheimer graduated from UC Irvine School of Medicine in 1991.
What drugs does Dr. Charles E. Hergesheimer prescribe most?
In 2024 Medicare Part D data, Dr. Hergesheimer's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Charles E. Hergesheimer received payments from drug or device companies?
CMS Open Payments shows $281 in general payments to Dr. Hergesheimer from 12 companies from 2016 to 2025. The largest total came from Astellas Pharma US Inc.
How long has Dr. Charles E. Hergesheimer been practicing?
Dr. Hergesheimer graduated from medical school in 1991, 35 years ago.
What insurance does Dr. Charles E. Hergesheimer accept?
Dr. Hergesheimer is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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