Dr. Geoffrey Gaddis Hallock, MD
- Medicare services, 2024
- 1,030
- Medicare patients, 2024
- 410
- Part D claims, 2024
- 348
- Publications
- 32
- MIPS score, 2024
- 22
- Practice address
- 421 West Chew Street, Allentown, PA 18102
- Practice phone
- Call (484) 658-0832
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St. Luke's Penn Foundation - Inpatient Adult Unit - Sacred Heart
Psychiatric Inpatient Facility · Allentown, Pennsylvania
Find Dr. Hallock'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. Geoffrey Gaddis Hallock is a plastic surgeon in Allentown, Pennsylvania
Dr. Hallock practices at St. Luke's Penn Foundation - Inpatient Adult Unit - Sacred Heart in Allentown, Pennsylvania.
Dr. Hallock's NPI, 1184618522, was assigned on August 31, 2005. Dr. Hallock graduated from Jefferson Medical College of Thomas Jefferson University in 1975. Dr. Hallock holds Pennsylvania license MD026825E.
- NPI
- 1184618522NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971643446
- NPI enumeration date
- August 31, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (484) 658-0832
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Geoffrey Gaddis Hallock practices at St. Luke's Penn Foundation - Inpatient Adult Unit - Sacred Heart in Allentown, Pennsylvania
Dr. Hallock's primary practice is St. Luke's Penn Foundation - Inpatient Adult Unit - Sacred Heart, at 421 West Chew Street, Allentown, PA 18102. The practice phone is (484) 658-0832.
- St. Luke's Penn Foundation - Inpatient Adult Unit - Sacred Heart421 West Chew Street, Allentown, PA 18102Phone(484) 658-0832
Source: Dmand AI Affiliation Data
Dr. Geoffrey Gaddis Hallock is affiliated with 3 sites of care
Dr. Hallock's primary practice is St. Luke's Penn Foundation - Inpatient Adult Unit - Sacred Heart in Allentown, Pennsylvania. Dr. Hallock is also affiliated with Lehigh Valley Hospital-Cedar Crest. Dmand AI also links Dr. Hallock to 1 more hospital, named with a free account. Dr. Hallock's employer is on file too: a behavioral health center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Geoffrey Gaddis Hallock's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hallock practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Luke's Penn Foundation - Inpatient Adult Unit - Sacred Heart | 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. Geoffrey Gaddis Hallock is one of 182 plastic surgeons in Pennsylvania
Plastic surgery is Dr. Hallock's primary specialty in the NPI Registry, under taxonomy code 208200000X. Dr. Hallock is licensed in Pennsylvania.
Specialties and state licenses
- Plastic surgery, PennsylvaniaPrimary
Plastic surgeons near Dr. Hallock
Counts of plastic surgeons 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. Geoffrey Gaddis Hallock billed Medicare for 1,030 services in 2024
CMS data shows 1,030 Medicare services from Dr. Hallock across 21 procedure codes in 2024, for 410 Medicare patients. Medicare paid $86,213 for them. Every service was in an office.
Dr. Hallock's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 5912024: 53310%
- Office and hospital visits
- 2023: 4912024: 4971%
Dr. Hallock compared with the Pennsylvania median for plastic surgeons, 2024
- Dr. Hallock
- Pennsylvania median
- Medicare services
- 1,030vs 5718.1 times
- Medicare patients
- 410vs 616.7 times
- Part D claims
- 273vs 299.4 times
Medians across 170 plastic surgeons in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Hallock'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. Hallock and other plastic surgeons in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Geoffrey Gaddis Hallock treated 410 Medicare patients in 2024, average age 77
CMS counts 410 Medicare patients who saw Dr. Hallock in 2024. The largest group is 75 to 84, with 162 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 4% are also on Medicaid. Their average risk score is 1.18, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hallock's median patient age at 71, with 51% women.
Dr. Hallock's Medicare patients by age, 2024
Dr. Hallock's Medicare patients by sex, 2024
- Women17643%
- Men23457%
Chronic conditions among Dr. Hallock's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Chronic kidney disease32%
- Ischemic heart disease31%
- Diabetes28%
- Anxiety21%
- Cancer21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hallock's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Geoffrey Gaddis Hallock wrote 348 Medicare Part D claims in 2024
In 2024, Dr. Hallock wrote 348 Medicare Part D claims for 113 patients. 97% of them were for generic drugs. CMS names the drug for 273 of them, across 9 drugs with 11 or more claims each, at $2,848 in total drug cost. In 2023, CMS named 369 claims across 10 drugs.
Dr. Hallock's Part D claims by kind of drug, 2024
- Generic339 claims97%
- Brand-name and other9 claims3%
Dr. Hallock'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. Hallock's Part D claims, 2024
- Opioids16%54 of 348 claims
- Antibiotics46%160 of 348 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: 3692024: 27326%
Drugs named by CMS: 9 in 2024, 10 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. Geoffrey Gaddis Hallock scored 22 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 22 out of 100 for Dr. Hallock for performance year 2024, reported individually. Dr. Hallock accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 292 procedures of melanoma (skin cancer) excision by Dr. Hallock, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Hallock's MIPS scores, performance year 2024
- 22of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Hallock ranks in Medicare procedure volume
- Melanoma (skin cancer) excision
- 98th percentile292 procedures
- Skin biopsy
- 77th percentile112 procedures
- Removal of tissue
- 67th percentile17 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of nail tissue: 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. Geoffrey Gaddis Hallock has 32 publications on record
Dmand AI links 32 papers to Dr. Hallock, published from 2016 to 2025. 2020 was the busiest year, with 8. The most frequent topics are Plastic Surgery Procedures, Perforator Flap and Surgical Flaps. Dr. Hallock has published most often in Plast Reconstr Surg. Dr. Hallock's most frequent co-authors are Brian Paul Bradow, MD, Lawrence Scott Levin, MD and Merisa L. Piper, MD.
Dr. Hallock's papers by year, 2016 to 2025
Topics Dr. Hallock writes about most
- Plastic Surgery Procedures
- Perforator Flap
- Surgical Flaps
- Free Tissue Flaps
- Microsurgery
- Skin Transplantation
- Lower Extremity
- Esthetics
Dr. Hallock's most frequent co-authors
- Brian Paul Bradow, MD1 shared paper
- Lawrence Scott Levin, MD1 shared paper
- Merisa L. Piper, MD1 shared paper
Recent publications by Dr. Hallock
J Reconstr Microsurg
Arch Plast Surg
Arch Plast Surg
See who Dr. Hallock researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hallock works with, so you can find a warm path to the right plastic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Geoffrey Gaddis Hallock received $271 in industry payments from 2016 to 2022
CMS Open Payments shows 8 general payments to Dr. Hallock from 4 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $165.
General payments to Dr. Hallock by program year, 2016 to 2022
Companies that paid Dr. Hallock the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Geoffrey Gaddis Hallock graduated from Jefferson Medical College of Thomas Jefferson University
Dr. Hallock graduated from Jefferson Medical College of Thomas Jefferson University in 1975.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Geoffrey Gaddis Hallock'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Geoffrey Gaddis Hallock
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What is Dr. Geoffrey Gaddis Hallock's NPI number?
Dr. Geoffrey Gaddis Hallock's NPI number is 1184618522. It was assigned on August 31, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Geoffrey Gaddis Hallock?
Dr. Geoffrey Gaddis Hallock is a plastic surgeon in Allentown, Pennsylvania. The primary specialty in the NPI Registry is Plastic Surgery Physician (taxonomy code 208200000X).
Where does Dr. Geoffrey Gaddis Hallock practice?
Dr. Hallock practices at 421 West Chew Street, Allentown, PA 18102. Dr. Hallock's primary practice is St. Luke's Penn Foundation - Inpatient Adult Unit - Sacred Heart in Allentown, Pennsylvania. Dmand AI also links Dr. Hallock to 1 hospital.
What is Dr. Geoffrey Gaddis Hallock's office phone number?
The practice phone on file for Dr. Hallock is (484) 658-0832.
What is Dr. Geoffrey Gaddis Hallock's medical license number?
Dr. Hallock holds Pennsylvania license MD026825E.
Which hospitals is Dr. Geoffrey Gaddis Hallock affiliated with?
Dr. Hallock is affiliated with Lehigh Valley Hospital-Cedar Crest. Dmand AI links Dr. Hallock to 1 more hospital.
Does Dr. Geoffrey Gaddis Hallock accept Medicare?
Yes. CMS data shows Dr. Hallock billed Medicare for 1,030 services in 2024, and Dr. Hallock accepts Medicare assignment.
What is Dr. Geoffrey Gaddis Hallock's MIPS score?
Dr. Hallock's MIPS final score for performance year 2024 is 22 out of 100, reported individually.
How many Medicare patients does Dr. Geoffrey Gaddis Hallock see?
CMS counts 410 Medicare patients who saw Dr. Hallock in 2024, with an average age of 77.
What services does Dr. Geoffrey Gaddis Hallock bill to Medicare?
In 2024, Dr. Hallock's most billed Medicare services were office visit, established patient (99212), surgery: skin and soft tissue (11106) and surgery: skin and soft tissue (12032).
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Where did Dr. Geoffrey Gaddis Hallock go to medical school?
Dr. Hallock graduated from Jefferson Medical College of Thomas Jefferson University in 1975.
What drugs does Dr. Geoffrey Gaddis Hallock prescribe most?
In 2024 Medicare Part D data, Dr. Hallock's most prescribed drugs by claims were Mupirocin, Sulfamethoxazole-Trimethoprim and Amoxicillin-Clavulanate Potass.
Has Dr. Geoffrey Gaddis Hallock received payments from drug or device companies?
CMS Open Payments shows $271 in general payments to Dr. Hallock from 4 companies from 2016 to 2022. The largest total came from Allergan Inc.
How long has Dr. Geoffrey Gaddis Hallock been practicing?
Dr. Hallock graduated from medical school in 1975, 51 years ago.
Does Dr. Geoffrey Gaddis Hallock do research?
Dmand AI links 32 publications to Dr. Hallock, published from 2016 to 2025.
Who does Dr. Geoffrey Gaddis Hallock publish with?
Dr. Hallock's most frequent co-authors are Brian Paul Bradow, MD (1 shared paper), Lawrence Scott Levin, MD (1 shared paper) and Merisa L. Piper, MD (1 shared paper).
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