Dr. Clayton B. Dejong, MD
- Medicare services, 2024
- 3,071
- Medicare patients, 2024
- 331
- Part D claims, 2024
- 5,749
- Hospital affiliations
- 3
- Industry payments
- $221
- Practice address
- 300 Redondo Ave, Long Beach, CA 90814
- Practice phone
- Call (562) 433-7496
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Prohealth Partners a Medical Group Inc
Long Beach, California
Find Dr. Dejong'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. Clayton B. Dejong is an internist in Long Beach, California
Dr. Dejong practices at Prohealth Partners a Medical Group Inc in Long Beach, California.
Dr. Dejong's NPI, 1467466409, was assigned on July 27, 2006. Dr. Dejong graduated from Carver College of Medicine in 1985. Dr. Dejong's California license number on file is A42912.
- NPI
- 1467466409NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072694777
- NPI enumeration date
- July 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (562) 433-7496
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Clayton B. Dejong practices at Prohealth Partners a Medical Group Inc in Long Beach, California
Dr. Dejong's primary practice is Prohealth Partners a Medical Group Inc, at 300 Redondo Ave, Long Beach, CA 90814 in Los Angeles County. The practice phone is (562) 433-7496.
- Prohealth Partners a Medical Group Inc300 Redondo Ave, Long Beach, CA 90814 · Los Angeles CountyPhone(562) 433-7496
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Clayton B. Dejong is affiliated with 7 sites of care and 2 medical groups
Dr. Dejong's primary practice is Prohealth Partners a Medical Group Inc in Long Beach, California. Dr. Dejong is also affiliated with Long Beach Medical Center. The medical group on file is ProHealth Partners. Dmand AI also links Dr. Dejong to 2 more hospitals, 2 group practices and clinics, 1 home health agency and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Clayton B. Dejong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dejong practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prohealth Partners a Medical Group Inc | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Clayton B. Dejong is one of 16,751 internists in California
Internal medicine is Dr. Dejong's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Dejong is board certified in internal medicine by the American Board of Internal Medicine. Dr. Dejong has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, acute sinusitis, aneurysm, arteritis, arthritis, asthma and atrial fibrillation and flutter among the conditions Dr. Dejong treats.
Internists near Dr. Dejong
Counts of internists 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. Clayton B. Dejong billed Medicare for 3,071 services in 2024
CMS data shows 3,071 Medicare services from Dr. Dejong across 19 procedure codes in 2024, for 331 Medicare patients. Medicare paid $129,102 for them. Every service was in an office.
Dr. Dejong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,5342024: 1,92225%
- Other services
- 2023: 5582024: 62211%
- Surgery
- 2023: 3452024: 3178%
- Tests and treatments
- 2023: 1722024: 19312%
- Lab and pathology
- 2023: 272024: 1737%
Dr. Dejong compared with the California median for internists, 2024
- Dr. Dejong
- California median
- Medicare services
- 3,071vs 3618.5 times
- Medicare patients
- 331vs 1512.2 times
- Part D claims
- 5,101vs 42112.1 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Dejong'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. Dejong and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Clayton B. Dejong treated 331 Medicare patients in 2024, average age 77
CMS counts 331 Medicare patients who saw Dr. Dejong in 2024. The largest group is 65 to 74, with 136 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% 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 Dr. Dejong's median patient age at 65, with 43% women.
Dr. Dejong's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Dejong's Medicare patients by sex, 2024
- Women14744%
- Men18456%
Chronic conditions among Dr. Dejong's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Ischemic heart disease28%
- Chronic kidney disease27%
- Diabetes27%
- Anxiety23%
- Atrial fibrillation22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dejong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women43%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Clayton B. Dejong wrote 5,749 Medicare Part D claims in 2024
In 2024, Dr. Dejong wrote 5,749 Medicare Part D claims for 572 patients. 91% of them were for generic drugs. CMS names the drug for 5,101 of them, across 109 drugs with 11 or more claims each, at $310,509 in total drug cost. In 2023, CMS named 4,574 claims across 96 drugs.
Dr. Dejong's Part D claims by kind of drug, 2024
- Generic5,207 claims91%
- Brand-name515 claims9%
- Other27 claims0%
Dr. Dejong'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. Dejong's Part D claims, 2024
- Opioids2%115 of 5,749 claims
- Antibiotics3%148 of 5,749 claims
- Antipsychotics, patients 65 and over0%13 of 5,749 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: 4,5742024: 5,10112%
Drugs named by CMS: 109 in 2024, 96 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. Clayton B. Dejong offers telehealth to Medicare patients
Dr. Dejong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dejong as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
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. Clayton B. Dejong received $221 in industry payments from 2017 to 2025
CMS Open Payments shows 5 general payments to Dr. Dejong from 4 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $125.
General payments to Dr. Dejong by program year, 2017 to 2025
Companies that paid Dr. Dejong the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Clayton B. Dejong has 1 award and honors on record
Dmand AI lists 1 award for Dr. Dejong, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Dejong
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Clayton B. Dejong graduated from Carver College of Medicine
Dr. Dejong graduated from Carver College of Medicine in 1985.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Clayton B. Dejong accepts plans from 10 insurance carriers
Dr. Dejong is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- LA Care
- Regence Health Plans
- CMS Medicare
- +2 more carriersWith a free account
Plan types Dr. Dejong accepts, by number of carriers
- Medicare9
- PPO6
- HMO4
- EPO2
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Clayton B. Dejong'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Clayton B. Dejong
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. Clayton B. Dejong's NPI number?
Dr. Clayton B. Dejong's NPI number is 1467466409. It was assigned on July 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Clayton B. Dejong?
Dr. Clayton B. Dejong is an internist in Long Beach, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Clayton B. Dejong practice?
Dr. Dejong practices at 300 Redondo Ave, Long Beach, CA 90814. Dr. Dejong's primary practice is Prohealth Partners a Medical Group Inc in Long Beach, California. Dmand AI also links Dr. Dejong to 2 hospitals, 2 group practices and clinics, 1 home health agency and 1 medical group.
What is Dr. Clayton B. Dejong's office phone number?
The practice phone on file for Dr. Dejong is (562) 433-7496.
What is Dr. Clayton B. Dejong's medical license number?
Dr. Dejong's California license number on file is A42912.
Which hospitals is Dr. Clayton B. Dejong affiliated with?
Dr. Dejong is affiliated with Long Beach Medical Center. Dmand AI links Dr. Dejong to 2 more hospitals.
What medical group is Dr. Clayton B. Dejong part of?
Dr. Dejong is linked to ProHealth Partners. Dmand AI links Dr. Dejong to 1 more medical group.
Does Dr. Clayton B. Dejong accept Medicare?
Yes. CMS data shows Dr. Dejong billed Medicare for 3,071 services in 2024, and Dr. Dejong accepts Medicare assignment.
Does Dr. Clayton B. Dejong offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Dejong as offering telehealth services.
How many Medicare patients does Dr. Clayton B. Dejong see?
CMS counts 331 Medicare patients who saw Dr. Dejong in 2024, with an average age of 77.
Show 7 more questionsShow fewer questions
Is Dr. Clayton B. Dejong board certified?
Yes. Dr. Dejong is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Clayton B. Dejong bill to Medicare?
In 2024, Dr. Dejong's most billed Medicare services were care management and other visits (99457), care management and other visits (99454) and office visit, established patient (99213).
Where did Dr. Clayton B. Dejong go to medical school?
Dr. Dejong graduated from Carver College of Medicine in 1985.
What drugs does Dr. Clayton B. Dejong prescribe most?
In 2024 Medicare Part D data, Dr. Dejong's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Amlodipine Besylate.
Has Dr. Clayton B. Dejong received payments from drug or device companies?
CMS Open Payments shows $221 in general payments to Dr. Dejong from 4 companies from 2017 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Clayton B. Dejong been practicing?
Dr. Dejong graduated from medical school in 1985, 41 years ago.
What insurance does Dr. Clayton B. Dejong accept?
Dr. Dejong is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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