Antigens, DifferentiationCarbohydratesCD57 Antigens
Dr. John R. Harper III, MD
NPI1720098205PAC ID6305819582
- Medicare services, 2024
- 4,650
- Medicare patients, 2024
- 242
- Part D claims, 2024
- 11,366
- Publications
- 19
- Hospital affiliations
- 3
- Practice address
- 15611 Pomerado Rd, Poway, CA 92064
- Practice phone
- Call (858) 521-0031
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Poway Surgery Center
Surgery Center - Medicare-Certified · Poway, California
Find Dr. Harper's professional email, personal email and mobile number
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Dr. John R. Harper III is a general practice physician in Poway, California
Dr. Harper practices at Poway Surgery Center in Poway, California.
Dr. Harper's NPI, 1720098205, was assigned on August 8, 2006. Dr. Harper graduated from Penn State College of Medicine in 2001. Dr. Harper holds California license A80250.
NPI and contact details
- NPI
- 1720098205NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305819582
- NPI enumeration date
- August 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (858) 521-0031
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John R. Harper III practices at Poway Surgery Center in Poway, California
Dr. Harper's primary practice is Poway Surgery Center, at 15611 Pomerado Rd, Poway, CA 92064. The practice phone is (858) 521-0031.
- Poway Surgery Center15611 Pomerado Rd, Poway, CA 92064Phone(858) 521-0031
Source: Dmand AI Affiliation Data
Dr. John R. Harper III is affiliated with 11 sites of care and 2 medical groups
Dr. Harper's primary practice is Poway Surgery Center in Poway, California. Dr. Harper is also affiliated with Palomar UC San Diego Health Poway. The medical group on file is Palomar Health Medical Group. Dmand AI also links Dr. Harper to 2 more hospitals, 5 home health agencies, 2 group practices and clinics and 1 medical group, each named with a free account.
Poway Surgery CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John R. Harper III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Harper practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Poway Surgery Center | Available with a free account |
| +10 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John R. Harper III is one of 1,526 general practice physicians in California
General practice is Dr. Harper's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Harper is licensed in California.
Specialties and state licenses
- General practice, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, acute kidney failure, acute mini-stroke (TIA), acute sinusitis, acute skin infection, aneurysm and ankle or foot injury among the conditions Dr. Harper treats.
General practice physicians near Dr. Harper
Counts of general practice physicians with a Dmand AI profile, by place and practice. Each opens the list.
1,526general practice physicians in California
2general practice physicians in Poway
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John R. Harper III billed Medicare for 4,650 services in 2024
CMS data shows 4,650 Medicare services from Dr. Harper across 41 procedure codes in 2024, for 242 Medicare patients. Medicare paid $139,447 for them. Every service was in an office.
Medicare services, 20244,650
Medicare patients242
Paid by Medicare$139,447
Procedure codes41
Dr. Harper's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 7,9872024: 2,63267%
- Office and hospital visits
- 2023: 1,8512024: 1,61213%
- Surgery
- 2023: 4402024: 32227%
- Tests and treatments
- 2023: 1392024: 5958%
- Other services
- 2023: 1212024: 2579%
- Drugs given in the office
- 2023: 262024: 0100%
Dr. Harper compared with the California median for general practice physicians, 2024
- Dr. Harper
- California median
- Medicare services
- 4,650vs 26217.7 times
- Medicare patients
- 242vs 13678% above
- Part D claims
- 10,609vs 19255.3 times
Medians across 1,114 general practice physicians in California with Dmand AI profiles that report each measure.
Dr. Harper'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. Harper and other general practice physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John R. Harper III treated 242 Medicare patients in 2024, average age 75
CMS counts 242 Medicare patients who saw Dr. Harper in 2024. The largest group is 65 to 74, with 92 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 13% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Harper's median patient age at 69, with 45% women.
Medicare patients, 2024242
Average age75
Average risk score1.03
Also on Medicaid13%
Dr. Harper's Medicare patients by age, 2024
Dr. Harper's Medicare patients by sex, 2024
- Women11548%
- Men12752%
Chronic conditions among Dr. Harper's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis50%
- Diabetes26%
- Mood disorders23%
- Ischemic heart disease21%
- Anxiety20%
- Chronic kidney disease20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Harper's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John R. Harper III wrote 11,366 Medicare Part D claims in 2024
In 2024, Dr. Harper wrote 11,366 Medicare Part D claims for 523 patients. 80% of them were for generic drugs. CMS names the drug for 10,609 of them, across 143 drugs with 11 or more claims each, at $1,693,306 in total drug cost. In 2023, CMS named 9,428 claims across 135 drugs.
Part D claims, 202411,366
Drugs named by CMS143
Total drug cost$1.7M
Part D patients523
Dr. Harper's Part D claims by kind of drug, 2024
- Generic9,066 claims80%
- Brand-name2,109 claims19%
- Other191 claims2%
Dr. Harper'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. Harper's Part D claims, 2024
- Opioids1%111 of 11,366 claims
- Antibiotics1%75 of 11,366 claims
- Antipsychotics, patients 65 and over0%13 of 11,366 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: 9,4282024: 10,60913%
Drugs named by CMS: 143 in 2024, 135 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. John R. Harper III offers telehealth to Medicare patients
Dr. Harper accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Harper as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
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); and Doctors and Clinicians Utilization Data (CMS)
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Dr. John R. Harper III has 19 publications on record
Dmand AI links 19 papers to Dr. Harper. The most frequent topics are Cell Line, Melanoma and Antibodies, Monoclonal. Dr. Harper has published most often in J Biol Chem.
Papers19
Topics Dr. Harper writes about most
- Cell Line
- Melanoma
- Antibodies, Monoclonal
- Antigens, Neoplasm
- Proteoglycans
- Epitopes
- Molecular Weight
- Cell Adhesion
Recent publications by Dr. Harper
Base SequenceCell Adhesion Molecules, NeuronalCloning, Molecular
9,10-Dimethyl-1,2-benzanthraceneCell LineCells, Cultured
AcetyltransferasesCalciumCells, Cultured
Crit Rev Immunol
Antibodies, MonoclonalAntigens, NeoplasmColonic Neoplasms
See who Dr. Harper researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Harper works with, so you can find a warm path to the right general practice physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John R. Harper III received $13,431 in industry payments from 2016 to 2025
CMS Open Payments shows 641 general payments to Dr. Harper from 41 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $4,435.
General payments to Dr. Harper by program year, 2016 to 2025
General payments to Dr. Harper by kind, 2016 to 2025
$13.4Kin total
- Food and beverage$13,380100%
- Education$380%
- Entertainment$130%
Companies that paid Dr. Harper 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. John R. Harper III has 1 award and honors on record
Dmand AI lists 1 award for Dr. Harper, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Harper
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. John R. Harper III graduated from Penn State College of Medicine
Dr. Harper graduated from Penn State College of Medicine in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. John R. Harper III accepts plans from 11 insurance carriers
Dr. Harper is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Humana
- Regence Health Plans
- Aspirus Health Plan
- +3 more carriersWith a free account
Plan types Dr. Harper accepts, by number of carriers
- Medicare8
- PPO8
- POS4
- HMO3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. John R. Harper III'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)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) |
| 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. John R. Harper III
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. John R. Harper III's NPI number?
Dr. John R. Harper III's NPI number is 1720098205. It was assigned on August 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John R. Harper III?
Dr. John R. Harper III is a general practice physician in Poway, California. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. John R. Harper III practice?
Dr. Harper practices at 15611 Pomerado Rd, Poway, CA 92064. Dr. Harper's primary practice is Poway Surgery Center in Poway, California. Dmand AI also links Dr. Harper to 2 hospitals, 5 home health agencies, 2 group practices and clinics and 1 medical group.
What is Dr. John R. Harper III's office phone number?
The practice phone on file for Dr. Harper is (858) 521-0031.
What is Dr. John R. Harper III's medical license number?
Dr. Harper holds California license A80250.
Which hospitals is Dr. John R. Harper III affiliated with?
Dr. Harper is affiliated with Palomar UC San Diego Health Poway. Dmand AI links Dr. Harper to 2 more hospitals.
What medical group is Dr. John R. Harper III part of?
Dr. Harper is linked to Palomar Health Medical Group. Dmand AI links Dr. Harper to 1 more medical group.
Does Dr. John R. Harper III accept Medicare?
Yes. CMS data shows Dr. Harper billed Medicare for 4,650 services in 2024, and Dr. Harper accepts Medicare assignment.
Does Dr. John R. Harper III offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Harper as offering telehealth services.
How many Medicare patients does Dr. John R. Harper III see?
CMS counts 242 Medicare patients who saw Dr. Harper in 2024, with an average age of 75.
Show 7 more questionsShow fewer questions
What services does Dr. John R. Harper III bill to Medicare?
In 2024, Dr. Harper's most billed Medicare services were care management and other visits (99490), office visit, established patient (99214) and surgery: heart and blood vessels (36415).
Where did Dr. John R. Harper III go to medical school?
Dr. Harper graduated from Penn State College of Medicine in 2001.
What drugs does Dr. John R. Harper III prescribe most?
In 2024 Medicare Part D data, Dr. Harper's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Metformin HCl.
Has Dr. John R. Harper III received payments from drug or device companies?
CMS Open Payments shows $13,431 in general payments to Dr. Harper from 41 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. John R. Harper III been practicing?
Dr. Harper graduated from medical school in 2001, 25 years ago.
Does Dr. John R. Harper III do research?
Dmand AI links 19 publications to Dr. Harper.
What insurance does Dr. John R. Harper III accept?
Dr. Harper is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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