Dr. Janne Huynh Dewing, MD
- Medicare services, 2024
- 1,515
- Medicare patients, 2024
- 282
- Part D claims, 2024
- 6,784
- MIPS score, 2024
- 17
- Hospital affiliations
- 3
- Practice address
- 31852 Coast Hwy, Laguna Beach, CA 92651
- Practice phone
- Call (949) 499-2800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Oceanview Ambulatory Surgery Center LLC
Laguna Beach, California
Find Dr. Dewing'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. Janne Huynh Dewing is an internist in Laguna Beach, California
Dr. Dewing practices at Oceanview Ambulatory Surgery Center LLC in Laguna Beach, California.
Dr. Dewing's NPI, 1699973297, was assigned on July 5, 2007. Dr. Dewing graduated from David Geffen School of Medicine at UCLA in 1994. Dr. Dewing holds California license C52349.
- NPI
- 1699973297NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3476601477
- NPI enumeration date
- July 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (949) 499-2800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Janne Huynh Dewing practices at Oceanview Ambulatory Surgery Center LLC in Laguna Beach, California
Dr. Dewing's primary practice is Oceanview Ambulatory Surgery Center LLC, at 31852 Coast Hwy, Laguna Beach, CA 92651 in Orange County. The practice phone is (949) 499-2800.
- Oceanview Ambulatory Surgery Center LLC31852 Coast Hwy, Laguna Beach, CA 92651 · Orange CountyPhone(949) 499-2800
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Janne Huynh Dewing is affiliated with 7 sites of care
Dr. Dewing's primary practice is Oceanview Ambulatory Surgery Center LLC in Laguna Beach, California. Dr. Dewing is also affiliated with Hoag Hospital Newport Beach. Dmand AI also links Dr. Dewing to 2 more hospitals, 2 home health agencies and 1 physician office, 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. Janne Huynh Dewing's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dewing practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Oceanview Ambulatory Surgery Center LLC | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Janne Huynh Dewing is one of 16,751 internists in California
Internal medicine is Dr. Dewing's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Dewing's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- New York license
Clinical focus
Dmand AI lists acid reflux, acute gallbladder or bile duct inflammation, acute gastroduodenitis, acute sinusitis, acute skin infection, alcohol use disorders, anxiety and arthritis among the conditions Dr. Dewing treats.
Internists near Dr. Dewing
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. Janne Huynh Dewing billed Medicare for 1,515 services in 2024
CMS data shows 1,515 Medicare services from Dr. Dewing across 6 procedure codes in 2024, for 282 Medicare patients. Medicare paid $141,945 for them. Every service was in an office.
Dr. Dewing's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,3952024: 1,4262%
- Other services
- 2023: 02024: 89
Dr. Dewing compared with the California median for internists, 2024
- Dr. Dewing
- California median
- Medicare services
- 1,515vs 3614.2 times
- Medicare patients
- 282vs 15187% above
- Part D claims
- 6,240vs 42114.8 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Dewing'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.
Need commercial claims for Dr. Dewing?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dewing and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Janne Huynh Dewing treated 282 Medicare patients in 2024, average age 76
CMS counts 282 Medicare patients who saw Dr. Dewing in 2024. The largest group is 75 to 84, with 125 patients. 75% of them have high cholesterol, and 73% have high blood pressure. Their average risk score is 0.90, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Dewing's median patient age at 74, with 70% women.
Dr. Dewing's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Dewing's Medicare patients by sex, 2024
- Women19670%
- Men8630%
Chronic conditions among Dr. Dewing's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis44%
- Mood disorders23%
- Diabetes21%
- Depression19%
- Osteoporosis19%
- Atrial fibrillation18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dewing's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women70%
- Men29%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Janne Huynh Dewing wrote 6,784 Medicare Part D claims in 2024
In 2024, Dr. Dewing wrote 6,784 Medicare Part D claims for 488 patients. 90% of them were for generic drugs. CMS names the drug for 6,240 of them, across 115 drugs with 11 or more claims each, at $341,427 in total drug cost. In 2023, CMS named 6,088 claims across 121 drugs.
Dr. Dewing's Part D claims by kind of drug, 2024
- Generic6,100 claims90%
- Brand-name668 claims10%
- Other16 claims0%
Dr. Dewing'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. Dewing's Part D claims, 2024
- Opioids1%46 of 6,784 claims
- Antibiotics4%260 of 6,784 claims
- Antipsychotics, patients 65 and over0%11 of 6,784 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: 6,0882024: 6,2402%
Drugs named by CMS: 115 in 2024, 121 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. Janne Huynh Dewing scored 17 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 17 out of 100 for Dr. Dewing for performance year 2024, reported individually. Dr. Dewing accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 20 procedures of removal of skin lesions by Dr. Dewing, more than 65% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Dewing's MIPS scores, performance year 2024
- 17of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 56of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Dewing ranks in Medicare procedure volume
- Removal of skin lesions
- 65th percentile20 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
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); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Janne Huynh Dewing received $2,886 in industry payments from 2016 to 2025
CMS Open Payments shows 23 general payments to Dr. Dewing from 6 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 47% of the total. Pfizer Inc. paid the most, $1,927.
General payments to Dr. Dewing by program year, 2016 to 2025
General payments to Dr. Dewing by kind, 2016 to 2025
- Food and beverage$1,34747%
- Consulting fees$1,20042%
- Travel and lodging$33312%
- Education$50%
Companies that paid Dr. Dewing 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. Janne Huynh Dewing has 1 award and honors on record
Dmand AI lists 1 award for Dr. Dewing, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Dewing
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Janne Huynh Dewing graduated from David Geffen School of Medicine at UCLA
Dr. Dewing graduated from David Geffen School of Medicine at UCLA in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Janne Huynh Dewing accepts plans from 13 insurance carriers
Dr. Dewing is in network with 13 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Aetna
- Alliant Health Plans
- Aspirus Health Plan
- +5 more carriersWith a free account
Plan types Dr. Dewing accepts, by number of carriers
- Medicare7
- HMO6
- PPO6
- POS4
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Janne Huynh Dewing'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)Clinician Public Reporting: Overall MIPS Performance (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. Janne Huynh Dewing
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. Janne Huynh Dewing's NPI number?
Dr. Janne Huynh Dewing's NPI number is 1699973297. It was assigned on July 5, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Janne Huynh Dewing?
Dr. Janne Huynh Dewing is an internist in Laguna Beach, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Janne Huynh Dewing practice?
Dr. Dewing practices at 31852 Coast Hwy, Laguna Beach, CA 92651. Dr. Dewing's primary practice is Oceanview Ambulatory Surgery Center LLC in Laguna Beach, California. Dmand AI also links Dr. Dewing to 2 hospitals, 2 home health agencies and 1 physician office.
What is Dr. Janne Huynh Dewing's office phone number?
The practice phone on file for Dr. Dewing is (949) 499-2800.
What is Dr. Janne Huynh Dewing's medical license number?
Dr. Dewing holds California license C52349, one of the licenses on file in 2 states.
Which states has Dr. Janne Huynh Dewing been licensed in?
Dmand AI has state licenses on file for Dr. Dewing in California (2006 to 2026) and New York (1997 to 2009).
Which hospitals is Dr. Janne Huynh Dewing affiliated with?
Dr. Dewing is affiliated with Hoag Hospital Newport Beach. Dmand AI links Dr. Dewing to 2 more hospitals.
Does Dr. Janne Huynh Dewing accept Medicare?
Yes. CMS data shows Dr. Dewing billed Medicare for 1,515 services in 2024, and Dr. Dewing accepts Medicare assignment.
What is Dr. Janne Huynh Dewing's MIPS score?
Dr. Dewing's MIPS final score for performance year 2024 is 17 out of 100, reported individually.
How many Medicare patients does Dr. Janne Huynh Dewing see?
CMS counts 282 Medicare patients who saw Dr. Dewing in 2024, with an average age of 76.
Show 6 more questionsShow fewer questions
What services does Dr. Janne Huynh Dewing bill to Medicare?
In 2024, Dr. Dewing's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and office visit, established patient (99213).
Where did Dr. Janne Huynh Dewing go to medical school?
Dr. Dewing graduated from David Geffen School of Medicine at UCLA in 1994.
What drugs does Dr. Janne Huynh Dewing prescribe most?
In 2024 Medicare Part D data, Dr. Dewing's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Janne Huynh Dewing received payments from drug or device companies?
CMS Open Payments shows $2,886 in general payments to Dr. Dewing from 6 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Janne Huynh Dewing been practicing?
Dr. Dewing graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Janne Huynh Dewing accept?
Dr. Dewing is in network with 13 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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