David Jon Colliflower, PA-C

  • Sonoma, CA
  • Surgical physician assistant
NPI1891900346PAC ID7113016486
Medicare services, 2024
7,792
Medicare patients, 2024
275
Part D claims, 2024
208
MIPS score, 2024
81
Hospital affiliations
1
Practice address
347 Andrieux St, Sonoma, CA 95476
Practice phone
Call (707) 935-5000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Sonoma Valley Hospital

Hospital · Sonoma, California

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David Jon Colliflower is a surgical physician assistant in Sonoma, California

David Colliflower practices at Sonoma Valley Hospital in Sonoma, California, part of Sonoma Valley Hospital.

David Colliflower's NPI, 1891900346, was assigned on May 10, 2007. David Colliflower holds California license 15993.

NPI and contact details
Medicare PAC ID
7113016486
NPI enumeration date
May 10, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(707) 935-5000
Professional email
Get email
Personal email
Get email
Mobile number
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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)

David Jon Colliflower practices at Sonoma Valley Hospital in Sonoma, California

David Colliflower's primary practice is Sonoma Valley Hospital, at 347 Andrieux St, Sonoma, CA 95476 in Sonoma County. The practice phone is (707) 935-5000.

Source: Dmand AI Affiliation Data

David Jon Colliflower is affiliated with 1 site of care and 1 medical group

David Colliflower's primary practice is Sonoma Valley Hospital in Sonoma, California, part of Sonoma Valley Hospital. The medical group on file is UCSF Medical Group.

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at David Jon Colliflower's practice

Dmand AI tracks the electronic health record (EHR) system at each site where David Colliflower practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Sonoma Valley HospitalAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dmand AI maps EHR vendors, IT decision makers and buying committees across Sonoma Valley Hospital and 6.2K+ hospitals, with verified contacts in the same login.

David Jon Colliflower is one of 883 surgical physician assistants in California

Surgical is David Colliflower's primary specialty in the NPI Registry, under taxonomy code 363AS0400X. David Colliflower is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Dmand AI has David Colliflower's licenses on file in 2 states: California and Washington.

Specialties and state licenses

  • Surgical physician assistant, CaliforniaPrimaryLicense 15993 · taxonomy 363AS0400X
  • Washington licenseLicense PA60693871

Clinical focus

Dmand AI lists ankle or foot injury, arthritis, bursitis, joint pain, knee injury, lower back pain, minor injury to a limb and rotator cuff injury among the conditions David Colliflower treats.

Surgical physician assistants near David Colliflower

Counts of surgical 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

David Jon Colliflower billed Medicare for 7,792 services in 2024

CMS data shows 7,792 Medicare services from David Colliflower across 9 procedure codes in 2024, for 275 Medicare patients. Medicare paid $55,736 for them. Every service was in an office.

Medicare services, 20247,792
Medicare patients275
Paid by Medicare$55,736
Procedure codes9

David Colliflower's Medicare services by type, 2024

  1. Drugs given in the office7,098
  2. Office and hospital visits452
  3. Surgery242

David Colliflower compared with the California median for surgical physician assistants, 2024

  • David Colliflower
  • California median
Medicare services
7,792vs 22035.4 times
Medicare patients
275vs 903.1 times
Part D claims
148vs 155Close to median

Medians across 656 surgical physician assistants in California with Dmand AI profiles that report each measure.

David Colliflower'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.

See all procedures by David Colliflower

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

David Jon Colliflower treated 275 Medicare patients in 2024, average age 77

CMS counts 275 Medicare patients who saw David Colliflower in 2024. The largest group is 75 to 84, with 109 patients. 75% of them have arthritis, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 1.24, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts David Colliflower's median patient age at 71, with 57% women.

Medicare patients, 2024275
Average age77
Average risk score1.24
Also on Medicaid20%

David Colliflower's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

David Colliflower's Medicare patients by sex, 2024

  • Women17463%
  • Men10137%

Chronic conditions among David Colliflower's Medicare patients, 2024

  1. Arthritis75%
  2. High cholesterol75%
  3. High blood pressure72%
  4. Mood disorders28%
  5. Anxiety26%
  6. Depression24%
  7. Ischemic heart disease23%
  8. Osteoporosis23%

Share of Medicare patients with each condition. A patient can have several.

David Colliflower'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

  • Women57%
  • Men43%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

David Jon Colliflower wrote 208 Medicare Part D claims in 2024

In 2024, David Colliflower wrote 208 Medicare Part D claims for 77 patients. 99% of them were for generic drugs. CMS names the drug for 148 of them, across 6 drugs with 11 or more claims each, at $669 in total drug cost.

Part D claims, 2024208
Drugs named by CMS6
Total drug cost$669
Part D patients77

David Colliflower's Part D claims by kind of drug, 2024

  • Generic206 claims99%
  • Brand-name and other2 claims1%

David Colliflower'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 David Colliflower's Part D claims, 2024

  • Opioids20%42 of 208 claims
  • Antibiotics5%11 of 208 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

See all prescribing by David Colliflower

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

David Jon Colliflower scored 81 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for David Colliflower for performance year 2024. David Colliflower accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

David Colliflower's MIPS scores, performance year 2024

  • 81of 100Final score
  • 80.9of 100Quality
  • 76of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 76of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

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David Jon Colliflower received $18 in industry payments in 2024

CMS Open Payments shows 1 general payment to David Colliflower from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Heron Therapeutics, Inc. paid the most, $18.

Companies that paid David Colliflower the most, 2024 to 2024

Share is of all general payments to this clinician.

See all payments to David Colliflower

Source: Open Payments (CMS), 2025 data, released July 7, 2026

David Jon Colliflower is board certified in certified physician assistant

David Colliflower is a member of AAPA.

  1. Board certified in certified physician assistantNational Commission on Certification of Physician Assistants (NCCPA)

Source: Dmand AI Professional Profile Data

Sources for David Jon Colliflower's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about David Jon Colliflower

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is David Jon Colliflower's NPI number?

David Jon Colliflower's NPI number is 1891900346. It was assigned on May 10, 2007, and it is active in the NPI Registry.

What does David Jon Colliflower specialize in?

David Jon Colliflower is a surgical physician assistant in Sonoma, California. The primary specialty in the NPI Registry is Surgical Physician Assistant (taxonomy code 363AS0400X).

Where does David Jon Colliflower practice?

David Colliflower practices at 347 Andrieux St, Sonoma, CA 95476. David Colliflower's primary practice is Sonoma Valley Hospital in Sonoma, California, part of Sonoma Valley Hospital.

What is David Jon Colliflower's office phone number?

The practice phone on file for David Colliflower is (707) 935-5000.

What is David Jon Colliflower's medical license number?

David Colliflower holds California license 15993, one of the licenses on file in 2 states.

Which states has David Jon Colliflower been licensed in?

Dmand AI has state licenses on file for David Colliflower in California and Washington.

Which hospitals is David Jon Colliflower affiliated with?

David Colliflower practices at Sonoma Valley Hospital in Sonoma, California.

What medical group is David Jon Colliflower part of?

David Colliflower is linked to UCSF Medical Group.

Does David Jon Colliflower accept Medicare?

Yes. CMS data shows David Colliflower billed Medicare for 7,792 services in 2024, and David Colliflower accepts Medicare assignment.

What is David Jon Colliflower's MIPS score?

David Colliflower's MIPS final score for performance year 2024 is 81 out of 100.

Show 6 more questionsShow fewer questions

How many Medicare patients does David Jon Colliflower see?

CMS counts 275 Medicare patients who saw David Colliflower in 2024, with an average age of 77.

Is David Jon Colliflower board certified?

Yes. David Colliflower is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).

What services does David Jon Colliflower bill to Medicare?

In 2024, David Colliflower's most billed Medicare services were injected or infused drug (J1010), injected or infused drug (J7325) and office visit, established patient (99213).

What drugs does David Jon Colliflower prescribe most?

In 2024 Medicare Part D data, David Colliflower's most prescribed drugs by claims were Meloxicam, Gabapentin and Ibuprofen.

Has David Jon Colliflower received payments from drug or device companies?

CMS Open Payments shows $18 in general payments to David Colliflower from 1 company from 2024 to 2024. The largest total came from Heron Therapeutics, Inc.

How long has David Jon Colliflower been practicing?

David Colliflower graduated from medical school in 2001, 25 years ago.

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