Gregory K. Lynch, PA-C
- Medicare services, 2024
- 436
- Medicare patients, 2024
- 110
- Part D claims, 2024
- 343
- Industry payments
- $4,699
- Affiliated sites
- 2
- Practice address
- 8403 Fallbrook Ave, West Hills, CA 91304
- Practice phone
- Call (805) 404-1352
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Quest Diagnostics - West Hills
Clinical Lab - Full Service · West Hills, California
Find Gregory Lynch's professional email, personal email and mobile number
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Gregory K. Lynch is a physician assistant in West Hills, California
Gregory Lynch practices at Quest Diagnostics - West Hills in West Hills, California.
Gregory Lynch's NPI, 1790008175, was assigned on March 12, 2010. Gregory Lynch holds California license PA20639.
- NPI
- 1790008175NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779769781
- NPI enumeration date
- March 12, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 404-1352
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory K. Lynch practices at Quest Diagnostics - West Hills in West Hills, California
Gregory Lynch's primary practice is Quest Diagnostics - West Hills, at 8403 Fallbrook Ave, West Hills, CA 91304. The practice phone is (805) 404-1352.
- Quest Diagnostics - West Hills8403 Fallbrook Ave, West Hills, CA 91304Phone(805) 404-1352
Source: Dmand AI Affiliation Data
Gregory K. Lynch is affiliated with 2 sites of care and 1 medical group
Gregory Lynch's primary practice is Quest Diagnostics - West Hills in West Hills, California. The medical group on file is MPZ Dermatology. Dmand AI also links Gregory Lynch to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Gregory K. Lynch's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Lynch practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Quest Diagnostics - West Hills | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregory K. Lynch is one of 11,482 physician assistants in California
Physician assistant is Gregory Lynch's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Gregory Lynch is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Gregory Lynch is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Clinical focus
Dmand AI lists acne, acute skin infection, benign or precancerous skin growths, cold sores or genital herpes, contact dermatitis, hives, itchy rashes and joint cyst among the conditions Gregory Lynch treats.
Physician assistants near Gregory Lynch
Counts of physician assistants 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
Gregory K. Lynch billed Medicare for 436 services in 2024
CMS data shows 436 Medicare services from Gregory Lynch across 7 procedure codes in 2024, for 110 Medicare patients. Medicare paid $15,087 for them. Every service was in an office.
Gregory Lynch's Medicare services by type, 2024
- Surgery286
- Office and hospital visits150
Gregory Lynch compared with the California median for physician assistants, 2024
- Gregory Lynch
- California median
- Medicare services
- 436vs 2042.1 times
- Medicare patients
- 110vs 105Close to median
- Part D claims
- 246vs 243Close to median
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Gregory Lynch'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Gregory K. Lynch treated 110 Medicare patients in 2024, average age 73
CMS counts 110 Medicare patients who saw Gregory Lynch in 2024. The largest group is 65 to 74, with 54 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 1.35, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregory Lynch's median patient age at 56, with 55% women.
Gregory Lynch's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Gregory Lynch's Medicare patients by sex, 2024
- Women5954%
- Men5146%
Chronic conditions among Gregory Lynch's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes33%
- Ischemic heart disease29%
- Anxiety28%
- Chronic kidney disease27%
- Depression25%
Share of Medicare patients with each condition. A patient can have several.
Gregory Lynch's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregory K. Lynch wrote 343 Medicare Part D claims in 2024
In 2024, Gregory Lynch wrote 343 Medicare Part D claims for 107 patients. 89% of them were for generic drugs. CMS names the drug for 246 of them, across 8 drugs with 11 or more claims each, at $5,769 in total drug cost.
Gregory Lynch's Part D claims by kind of drug, 2024
- Generic306 claims89%
- Brand-name37 claims11%
Gregory Lynch'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 Gregory Lynch's Part D claims, 2024
- Antibiotics6%22 of 343 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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 Gregory K. Lynch takes part in Medicare
Gregory Lynch 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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Gregory K. Lynch received $4,699 in industry payments from 2024 to 2025
CMS Open Payments shows 156 general payments to Gregory Lynch from 18 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 74% of the total. Sun Pharmaceutical Industries Inc. paid the most, $1,560.
General payments to Gregory Lynch by program year, 2024 to 2025
General payments to Gregory Lynch by kind, 2024 to 2025
- Food and beverage$3,49174%
- Consulting fees$1,08023%
- Education$1283%
Companies that paid Gregory Lynch the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Gregory K. Lynch is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Gregory K. Lynch'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) |
| 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 Gregory K. Lynch
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory K. Lynch's NPI number?
Gregory K. Lynch's NPI number is 1790008175. It was assigned on March 12, 2010, and it is active in the NPI Registry.
What does Gregory K. Lynch specialize in?
Gregory K. Lynch is a physician assistant in West Hills, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Gregory K. Lynch practice?
Gregory Lynch practices at 8403 Fallbrook Ave, West Hills, CA 91304. Gregory Lynch's primary practice is Quest Diagnostics - West Hills in West Hills, California. Dmand AI also links Gregory Lynch to 1 group practice or clinic.
What is Gregory K. Lynch's office phone number?
The practice phone on file for Gregory Lynch is (805) 404-1352.
What is Gregory K. Lynch's medical license number?
Gregory Lynch holds California license PA20639.
What medical group is Gregory K. Lynch part of?
Gregory Lynch is linked to MPZ Dermatology.
Does Gregory K. Lynch accept Medicare?
Yes. CMS data shows Gregory Lynch billed Medicare for 436 services in 2024, and Gregory Lynch accepts Medicare assignment.
How many Medicare patients does Gregory K. Lynch see?
CMS counts 110 Medicare patients who saw Gregory Lynch in 2024, with an average age of 73.
Is Gregory K. Lynch board certified?
Yes. Gregory Lynch is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What services does Gregory K. Lynch bill to Medicare?
In 2024, Gregory Lynch's most billed Medicare services were surgery: skin and soft tissue (17003), office visit, established patient (99213) and surgery: skin and soft tissue (17110).
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What drugs does Gregory K. Lynch prescribe most?
In 2024 Medicare Part D data, Gregory Lynch's most prescribed drugs by claims were Ketoconazole, Triamcinolone Acetonide and Clobetasol Propionate.
Has Gregory K. Lynch received payments from drug or device companies?
CMS Open Payments shows $4,699 in general payments to Gregory Lynch from 18 companies from 2024 to 2025. The largest total came from Sun Pharmaceutical Industries Inc.
How long has Gregory K. Lynch been practicing?
Gregory Lynch graduated from medical school in 2009, 17 years ago.
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