Dr. Charles D. Gerlach, MD
- Medicare services, 2024
- 1,935
- Medicare patients, 2024
- 472
- Part D claims, 2024
- 16,472
- MIPS score, 2024
- 86
- Hospital affiliations
- 3
- Practice address
- 409 S 2nd St, Harrisburg, PA 17104
- Practice phone
- Call (717) 988-0020
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pinnaclehealth Internal Medicine, Union Deposit
Harrisburg, Pennsylvania
Find Dr. Gerlach'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 D. Gerlach is an internist in Harrisburg, Pennsylvania
Dr. Gerlach practices at Pinnaclehealth Internal Medicine, Union Deposit in Harrisburg, Pennsylvania.
Dr. Gerlach's NPI, 1053369447, was assigned on May 5, 2006. Dr. Gerlach holds Pennsylvania license MD040699L.
- NPI
- 1053369447NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214017763
- NPI enumeration date
- May 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (717) 988-0020
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles D. Gerlach practices at Pinnaclehealth Internal Medicine, Union Deposit in Harrisburg, Pennsylvania
Dr. Gerlach's primary practice is Pinnaclehealth Internal Medicine, Union Deposit, at 409 S 2nd St, Harrisburg, PA 17104 in Dauphin County. The practice phone is (717) 988-0020.
- Pinnaclehealth Internal Medicine, Union Deposit409 S 2nd St, Harrisburg, PA 17104 · Dauphin CountyPhone(717) 988-0020
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Charles D. Gerlach is affiliated with 12 sites of care and 2 medical groups
Dr. Gerlach's primary practice is Pinnaclehealth Internal Medicine, Union Deposit in Harrisburg, Pennsylvania. Dr. Gerlach is also affiliated with UPMC Harrisburg. The medical group on file is UPMC Pinnacle Health Systems. Dmand AI also links Dr. Gerlach to 2 more hospitals, 5 home health agencies, 2 group practices and clinics, 1 hospice and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Charles D. Gerlach's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gerlach practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pinnaclehealth Internal Medicine, Union Deposit | Available with a free account |
| +11 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Charles D. Gerlach is one of 5,665 internists in Pennsylvania
Internal medicine is Dr. Gerlach's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gerlach is licensed in Pennsylvania.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
Internists near Dr. Gerlach
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 D. Gerlach billed Medicare for 1,935 services in 2024
CMS data shows 1,935 Medicare services from Dr. Gerlach across 15 procedure codes in 2024, for 472 Medicare patients. Medicare paid $99,430 for them. Every service was in an office.
Dr. Gerlach's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7592024: 88617%
- Surgery
- 2023: 6462024: 6234%
- Other services
- 2023: 4202024: 27934%
- Tests and treatments
- 2023: 1222024: 1202%
- Drugs given in the office
- 2023: 672024: 2760%
Dr. Gerlach compared with the Pennsylvania median for internists, 2024
- Dr. Gerlach
- Pennsylvania median
- Medicare services
- 1,935vs 4174.6 times
- Medicare patients
- 472vs 1852.6 times
- Part D claims
- 15,605vs 22469.7 times
Medians across 5,518 internists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Gerlach'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. Gerlach and other internists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles D. Gerlach treated 472 Medicare patients in 2024, average age 74
CMS counts 472 Medicare patients who saw Dr. Gerlach in 2024. The largest group is 65 to 74, with 224 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.09, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gerlach's median patient age at 70, with 57% women.
Dr. Gerlach's Medicare patients by age, 2024
Dr. Gerlach's Medicare patients by sex, 2024
- Women24752%
- Men22548%
Chronic conditions among Dr. Gerlach's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis44%
- Chronic kidney disease42%
- Diabetes35%
- Ischemic heart disease23%
- Anxiety21%
- Mood disorders16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gerlach'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
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Charles D. Gerlach wrote 16,472 Medicare Part D claims in 2024
In 2024, Dr. Gerlach wrote 16,472 Medicare Part D claims for 1,092 patients. 89% of them were for generic drugs. CMS names the drug for 15,605 of them, across 191 drugs with 11 or more claims each, at $1,398,373 in total drug cost. In 2023, CMS named 15,308 claims across 193 drugs.
Dr. Gerlach's Part D claims by kind of drug, 2024
- Generic14,622 claims89%
- Brand-name1,744 claims11%
- Other106 claims1%
Dr. Gerlach'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. Gerlach's Part D claims, 2024
- Opioids4%709 of 16,472 claims
- Antibiotics3%434 of 16,472 claims
- Antipsychotics, patients 65 and over1%115 of 16,472 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: 15,3082024: 15,6052%
Drugs named by CMS: 191 in 2024, 193 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 D. Gerlach scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Gerlach for performance year 2024, reported as part of a group. Dr. Gerlach accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Gerlach as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Gerlach's MIPS scores, performance year 2024
- 86of 100Final score
- 76.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Charles D. Gerlach received $1 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Gerlach from 1 drug or device company in 2023. Education make up the largest share, 100% of the total. Sumitomo Pharma America, Inc. paid the most, $1.
Companies that paid Dr. Gerlach the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Charles D. Gerlach's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Charles D. Gerlach
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 D. Gerlach's NPI number?
Dr. Charles D. Gerlach's NPI number is 1053369447. It was assigned on May 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles D. Gerlach?
Dr. Charles D. Gerlach is an internist in Harrisburg, Pennsylvania. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Charles D. Gerlach practice?
Dr. Gerlach practices at 409 S 2nd St, Harrisburg, PA 17104. Dr. Gerlach's primary practice is Pinnaclehealth Internal Medicine, Union Deposit in Harrisburg, Pennsylvania. Dmand AI also links Dr. Gerlach to 2 hospitals, 5 home health agencies, 2 group practices and clinics, 1 hospice and 1 medical group.
What is Dr. Charles D. Gerlach's office phone number?
The practice phone on file for Dr. Gerlach is (717) 988-0020.
What is Dr. Charles D. Gerlach's medical license number?
Dr. Gerlach holds Pennsylvania license MD040699L.
Which hospitals is Dr. Charles D. Gerlach affiliated with?
Dr. Gerlach is affiliated with UPMC Harrisburg. Dmand AI links Dr. Gerlach to 2 more hospitals.
What medical group is Dr. Charles D. Gerlach part of?
Dr. Gerlach is linked to UPMC Pinnacle Health Systems. Dmand AI links Dr. Gerlach to 1 more medical group.
Does Dr. Charles D. Gerlach accept Medicare?
Yes. CMS data shows Dr. Gerlach billed Medicare for 1,935 services in 2024, and Dr. Gerlach accepts Medicare assignment.
Does Dr. Charles D. Gerlach offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Gerlach as offering telehealth services.
What is Dr. Charles D. Gerlach's MIPS score?
Dr. Gerlach's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Charles D. Gerlach see?
CMS counts 472 Medicare patients who saw Dr. Gerlach in 2024, with an average age of 74.
What services does Dr. Charles D. Gerlach bill to Medicare?
In 2024, Dr. Gerlach's most billed Medicare services were surgery: heart and blood vessels (36415), office visit, established patient (99214) and medicare service (G0439).
What drugs does Dr. Charles D. Gerlach prescribe most?
In 2024 Medicare Part D data, Dr. Gerlach's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Metformin HCl.
Has Dr. Charles D. Gerlach received payments from drug or device companies?
CMS Open Payments shows $1 in general payments to Dr. Gerlach from 1 company from 2023 to 2023. The largest total came from Sumitomo Pharma America, Inc.
How long has Dr. Charles D. Gerlach been practicing?
Dr. Gerlach graduated from medical school in 1985, 41 years ago.
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