Dr. Jonathan B. C. Humphrey, MD

  • Walnut Creek, CA
  • Family medicine physician
NPI1689644866PAC ID8224101480
Medicare services, 2024
14,347
Medicare patients, 2024
815
Part D claims, 2024
11,480
MIPS score, 2024
91
Hospital affiliations
4
Practice address
2637 Shadelands Drive, Walnut Creek, CA 94598
Practice phone
Call (925) 329-3710
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

BASS Imaging Center - Walnut Creek

Mammography / Breast Imaging Center · Walnut Creek, California

See all 12 affiliations

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Dr. Jonathan B. C. Humphrey is a family medicine physician in Walnut Creek, California

Dr. Humphrey practices at BASS Imaging Center - Walnut Creek in Walnut Creek, California.

Dr. Humphrey's NPI, 1689644866, was assigned on January 23, 2006. Dr. Humphrey graduated from UC San Diego School of Medicine in 1988. Dr. Humphrey holds California license G66292.

NPI and contact details
Medicare PAC ID
8224101480
NPI enumeration date
January 23, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(925) 329-3710
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
63
Medical school graduation
1988

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Jonathan B. C. Humphrey practices at BASS Imaging Center - Walnut Creek in Walnut Creek, California

Dr. Humphrey's primary practice is BASS Imaging Center - Walnut Creek, at 2637 Shadelands Drive, Walnut Creek, CA 94598. The practice phone is (925) 329-3710.

  • BASS Imaging Center - Walnut Creek
    2637 Shadelands Drive, Walnut Creek, CA 94598Phone(925) 329-3710

Source: Dmand AI Affiliation Data

Dr. Jonathan B. C. Humphrey is affiliated with 11 sites of care and 1 medical group

Dr. Humphrey's primary practice is BASS Imaging Center - Walnut Creek in Walnut Creek, California. Dr. Humphrey is also affiliated with John Muir Medical Center, Walnut Creek. The medical group on file is BASS Medical Group. Dmand AI also links Dr. Humphrey to 3 more hospitals, 5 home health agencies and 1 group practice or clinic, each named with a free account. Dr. Humphrey's employer is on file too: a breast imaging center.

See all 12 affiliations for Dr. Humphrey

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

Dmand AI tracks the EHR system at Dr. Jonathan B. C. Humphrey's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Humphrey practices, 11 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
BASS Imaging Center - Walnut CreekAvailable with a free account
+10 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Jonathan B. C. Humphrey is one of 15,680 family medicine physicians in California

Family medicine is Dr. Humphrey's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Humphrey is board certified in family medicine by the American Board of Family Medicine. Dr. Humphrey is licensed in California.

Specialties and state licenses

  • Family medicine, CaliforniaPrimaryLicense G66292 · 1989 to 2027 · taxonomy 207Q00000X

Clinical focus

Dmand AI lists acid reflux, acute gallbladder or bile duct inflammation, acute kidney failure, acute mini-stroke (TIA), acute sinusitis, acute skin infection, ADHD and adjustment disease among the conditions Dr. Humphrey treats.

Family medicine physicians near Dr. Humphrey

Counts of family medicine physicians 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. Jonathan B. C. Humphrey billed Medicare for 14,347 services in 2024

CMS data shows 14,347 Medicare services from Dr. Humphrey across 27 procedure codes in 2024, for 815 Medicare patients. Medicare paid $379,469 for them. Every service was in an office.

Medicare services, 202414,347
Medicare patients815
Paid by Medicare$379,469
Procedure codes27

Dr. Humphrey's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Drugs given in the office
2023: 4,7292024: 10,526123%
Office and hospital visits
2023: 1,7792024: 1,8253%
Other services
2023: 7212024: 83916%
Lab and pathology
2023: 3892024: 46219%
Tests and treatments
2023: 3142024: 40027%
Surgery
2023: 1952024: 29551%

Dr. Humphrey compared with the California median for family medicine physicians, 2024

  • Dr. Humphrey
  • California median
Medicare services
14,347vs 24658.3 times
Medicare patients
815vs 1186.9 times
Part D claims
10,393vs 83312.5 times

Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.

Dr. Humphrey'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 Dr. Humphrey

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

Dr. Jonathan B. C. Humphrey treated 815 Medicare patients in 2024, average age 75

CMS counts 815 Medicare patients who saw Dr. Humphrey in 2024. The largest group is 65 to 74, with 413 patients. 75% of them have high cholesterol, and 56% have high blood pressure. 3% are also on Medicaid. Their average risk score is 0.95, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Humphrey's median patient age at 66, with 51% women.

Medicare patients, 2024815
Average age75
Average risk score0.95
Also on Medicaid3%

Dr. Humphrey's Medicare patients by age, 2024

Dr. Humphrey's Medicare patients by sex, 2024

  • Women37546%
  • Men44054%

Chronic conditions among Dr. Humphrey's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure56%
  3. Arthritis39%
  4. Ischemic heart disease25%
  5. Anxiety16%
  6. Atrial fibrillation16%
  7. Cancer16%
  8. Chronic kidney disease14%

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

Dr. Humphrey's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 66

Patient panel by sex, all payers

  • Women51%
  • Men47%

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

Dr. Jonathan B. C. Humphrey wrote 11,480 Medicare Part D claims in 2024

In 2024, Dr. Humphrey wrote 11,480 Medicare Part D claims for 2,043 patients. 83% of them were for generic drugs. CMS names the drug for 10,393 of them, across 178 drugs with 11 or more claims each, at $1,036,929 in total drug cost. In 2023, CMS named 9,516 claims across 168 drugs.

Part D claims, 202411,480
Drugs named by CMS178
Total drug cost$1M
Part D patients2,043

Dr. Humphrey's Part D claims by kind of drug, 2024

  • Generic9,570 claims83%
  • Brand-name1,869 claims16%
  • Other41 claims0%

Dr. Humphrey'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. Humphrey's Part D claims, 2024

  • Opioids2%237 of 11,480 claims
  • Antibiotics3%314 of 11,480 claims
  • Antipsychotics, patients 65 and over2%194 of 11,480 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: 9,5162024: 10,3939%

Drugs named by CMS: 178 in 2024, 168 in 2023.

See all prescribing by Dr. Humphrey

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. Jonathan B. C. Humphrey scored 91 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Humphrey for performance year 2024, reported through an alternative payment model (APM). Dr. Humphrey accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Humphrey as offering telehealth. CMS counts 81 procedures of removal of skin lesions by Dr. Humphrey, more than 74% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Humphrey's MIPS scores, performance year 2024

  • 91of 100Final score
  • 80.4of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities

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

Where Dr. Humphrey ranks in Medicare procedure volume

Removal of skin lesions
74th percentile81 procedures
Removal or shaving of skin growth
67th percentile14 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)

Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Skin biopsy: 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)

For MedTech and pharma teams

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Dr. Jonathan B. C. Humphrey received $26,246 in industry payments from 2016 to 2025

CMS Open Payments shows 1,505 general payments to Dr. Humphrey from 107 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Pfizer Inc. paid the most, $2,114.

General payments to Dr. Humphrey by program year, 2016 to 2025

General payments to Dr. Humphrey by kind, 2016 to 2025

$26.2Kin total
  • Food and beverage$26,10499%
  • Education$1421%

Companies that paid Dr. Humphrey the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Humphrey

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

Dr. Jonathan B. C. Humphrey has 1 award and honors on record

Dmand AI lists 1 award for Dr. Humphrey, most recently CMS Stage 1 EHR in 2014.

Awards and honors for Dr. Humphrey

  1. 2014
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Jonathan B. C. Humphrey graduated from UC San Diego School of Medicine

Dr. Humphrey graduated from UC San Diego School of Medicine in 1988.

  1. Medical schoolUC San Diego School of Medicine
  2. Board certified in family medicineAmerican Board of Family Medicine

Source: Dmand AI Professional Profile Data

Dr. Jonathan B. C. Humphrey accepts plans from 8 insurance carriers

Dr. Humphrey is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Humana
  • Regence Health Plans
  • CMS Medicare

Plan types Dr. Humphrey accepts, by number of carriers

  1. Medicare8
  2. PPO7
  3. HMO3
  4. POS3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. Jonathan B. C. Humphrey'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network 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 Dr. Jonathan B. C. Humphrey

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. Jonathan B. C. Humphrey's NPI number?

Dr. Jonathan B. C. Humphrey's NPI number is 1689644866. It was assigned on January 23, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Jonathan B. C. Humphrey?

Dr. Jonathan B. C. Humphrey is a family medicine physician in Walnut Creek, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).

Where does Dr. Jonathan B. C. Humphrey practice?

Dr. Humphrey practices at 2637 Shadelands Drive, Walnut Creek, CA 94598. Dr. Humphrey's primary practice is BASS Imaging Center - Walnut Creek in Walnut Creek, California. Dmand AI also links Dr. Humphrey to 3 hospitals, 5 home health agencies and 1 group practice or clinic.

What is Dr. Jonathan B. C. Humphrey's office phone number?

The practice phone on file for Dr. Humphrey is (925) 329-3710.

What is Dr. Jonathan B. C. Humphrey's medical license number?

Dr. Humphrey holds California license G66292.

Which hospitals is Dr. Jonathan B. C. Humphrey affiliated with?

Dr. Humphrey is affiliated with John Muir Medical Center, Walnut Creek. Dmand AI links Dr. Humphrey to 3 more hospitals.

What medical group is Dr. Jonathan B. C. Humphrey part of?

Dr. Humphrey is linked to BASS Medical Group.

Does Dr. Jonathan B. C. Humphrey accept Medicare?

Yes. CMS data shows Dr. Humphrey billed Medicare for 14,347 services in 2024, and Dr. Humphrey accepts Medicare assignment.

Does Dr. Jonathan B. C. Humphrey offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Humphrey as offering telehealth services.

What is Dr. Jonathan B. C. Humphrey's MIPS score?

Dr. Humphrey's MIPS final score for performance year 2024 is 91 out of 100, reported through an alternative payment model (APM).

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Jonathan B. C. Humphrey see?

CMS counts 815 Medicare patients who saw Dr. Humphrey in 2024, with an average age of 75.

Is Dr. Jonathan B. C. Humphrey board certified?

Yes. Dr. Humphrey is board certified in family medicine by the American Board of Family Medicine.

What services does Dr. Jonathan B. C. Humphrey bill to Medicare?

In 2024, Dr. Humphrey's most billed Medicare services were injected or infused drug (J1306), office visit, established patient (99213) and office visit, established patient (99214).

Where did Dr. Jonathan B. C. Humphrey go to medical school?

Dr. Humphrey graduated from UC San Diego School of Medicine in 1988.

What drugs does Dr. Jonathan B. C. Humphrey prescribe most?

In 2024 Medicare Part D data, Dr. Humphrey's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.

Has Dr. Jonathan B. C. Humphrey received payments from drug or device companies?

CMS Open Payments shows $26,246 in general payments to Dr. Humphrey from 107 companies from 2016 to 2025. The largest total came from Pfizer Inc.

How long has Dr. Jonathan B. C. Humphrey been practicing?

Dr. Humphrey graduated from medical school in 1988, 38 years ago.

What insurance does Dr. Jonathan B. C. Humphrey accept?

Dr. Humphrey is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

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