Dr. John W. Witczak, DO
- Part D claims, 2024
- 26
- Publications
- 1
- Industry payments
- $182
- Affiliated sites
- 3
- Medical group
- 1
- Practice address
- 27882 Forbes Rd, Laguna Niguel, CA 92677
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Laguna Niguel Surgery Center - HOPD
Acute Care Hospital outpatient department · Laguna Niguel, California
Find Dr. Witczak's professional email, personal email and mobile number
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Dr. John W. Witczak is an orthopedic surgeon in Laguna Niguel, California
Dr. Witczak practices at Laguna Niguel Surgery Center - HOPD in Laguna Niguel, California.
Dr. Witczak's NPI, 1811913825, was assigned on July 14, 2006. Dr. Witczak graduated from Michigan State University College Of Osteopathic Medicine in 1979. Dr. Witczak holds California license 20A4682.
- NPI
- 1811913825NPI Registry (opens in a new tab)
- NPI enumeration date
- July 14, 2006
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John W. Witczak practices at Laguna Niguel Surgery Center - HOPD in Laguna Niguel, California
Dr. Witczak's primary practice is Laguna Niguel Surgery Center - HOPD, at 27882 Forbes Rd, Laguna Niguel, CA 92677.
- Laguna Niguel Surgery Center - HOPD27882 Forbes Rd, Laguna Niguel, CA 92677
Source: Dmand AI Affiliation Data
Dr. John W. Witczak is affiliated with 3 sites of care and 1 medical group
Dr. Witczak's primary practice is Laguna Niguel Surgery Center - HOPD in Laguna Niguel, California. Dmand AI also links Dr. Witczak to 1 group practice or clinic, 1 ambulatory surgery center and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John W. Witczak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Witczak practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Laguna Niguel Surgery Center - HOPD | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John W. Witczak is one of 2,056 orthopedic surgeons in California
Orthopaedic surgery is Dr. Witczak's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Witczak is board certified in 1987 - 1993 by the AL State License. Dr. Witczak is licensed in California.
Specialties and state licenses
- Orthopaedic surgery, CaliforniaPrimary
Clinical focus
Dmand AI lists hand joint or tendon inflammation among the conditions Dr. Witczak treats.
Orthopedic surgeons near Dr. Witczak
Counts of orthopedic surgeons 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. John W. Witczak's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Witczak's median patient age at 58, with 50% women.
Dr. Witczak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women50%
- Men40%
Source: Dmand AI Patient Panel Data
Dr. John W. Witczak wrote 26 Medicare Part D claims in 2024
In 2024, Dr. Witczak wrote 26 Medicare Part D claims. 88% of them were for generic drugs. CMS names the drug for 22 of them, across 2 drugs with 11 or more claims each, at $884 in total drug cost. In 2017, CMS named 11 claims across 1 drug.
Dr. Witczak's Part D claims by kind of drug, 2024
- Generic23 claims88%
- Brand-name and other3 claims12%
Dr. Witczak's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 112018: 22100%
Drugs named by CMS: 2 in 2018, 1 in 2017.
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
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Dr. John W. Witczak has 1 publication on record
Dmand AI links 1 paper to Dr. Witczak.
Recent publications by Dr. Witczak
See who Dr. Witczak researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Witczak works with, so you can find a warm path to the right orthopedic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John W. Witczak received $182 in industry payments from 2016 to 2025
CMS Open Payments shows 7 general payments to Dr. Witczak from 7 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Arthrosurface Incorporated paid the most, $48.
General payments to Dr. Witczak by program year, 2016 to 2025
Companies that paid Dr. Witczak 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. John W. Witczak graduated from Michigan State University College Of Osteopathic Medicine
Dr. Witczak graduated from Michigan State University College Of Osteopathic Medicine in 1979. Dr. Witczak is a member of AOA.
- Medical school
- Board certified in 1987 - 1993
- Board certified in 1981 - 2026
- Board certified in 1989 - 1996
- Board certified in 1980 - 2026
- Board certified in 1985 - 2025
- Board certified in 1991 - 1992
Source: Dmand AI Professional Profile Data
Dr. John W. Witczak accepts plans from 6 insurance carriers
Dr. Witczak is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- Regence Health Plans
Plan types Dr. Witczak accepts, by number of carriers
- Medicare6
- PPO6
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. John W. Witczak'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 Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. John W. Witczak
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. John W. Witczak's NPI number?
Dr. John W. Witczak's NPI number is 1811913825. It was assigned on July 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John W. Witczak?
Dr. John W. Witczak is an orthopedic surgeon in Laguna Niguel, California. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. John W. Witczak practice?
Dr. Witczak practices at 27882 Forbes Rd, Laguna Niguel, CA 92677. Dr. Witczak's primary practice is Laguna Niguel Surgery Center - HOPD in Laguna Niguel, California. Dmand AI also links Dr. Witczak to 1 group practice or clinic, 1 ambulatory surgery center and 1 medical group.
What is Dr. John W. Witczak's medical license number?
Dr. Witczak holds California license 20A4682.
Is Dr. John W. Witczak board certified?
Yes. Dr. Witczak is board certified in 1987 - 1993 by the AL State License.
Where did Dr. John W. Witczak go to medical school?
Dr. Witczak graduated from Michigan State University College Of Osteopathic Medicine in 1979.
What drugs does Dr. John W. Witczak prescribe most?
In 2018 Medicare Part D data, Dr. Witczak's most prescribed drugs by claims were Fluconazole and Proair Hfa.
Has Dr. John W. Witczak received payments from drug or device companies?
CMS Open Payments shows $182 in general payments to Dr. Witczak from 7 companies from 2016 to 2025. The largest total came from Arthrosurface Incorporated.
How long has Dr. John W. Witczak been practicing?
Dr. Witczak graduated from medical school in 1979, 47 years ago.
Does Dr. John W. Witczak do research?
Dmand AI links 1 publication to Dr. Witczak.
What insurance does Dr. John W. Witczak accept?
Dr. Witczak is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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