Dr. William C. Steffan, MD
- Medicare services, 2018
- 929
- Part D claims, 2019
- 104
- Industry payments
- $785
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 27231 La Paz Rd Ste A Suite A, Laguna Niguel, CA 92677-3627
- Practice phone
- Call (949) 643-9111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
John P Meehan III
Primary care practice · Laguna Niguel, California
Find Dr. Steffan's professional email, personal email and mobile number
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Dr. William C. Steffan is a family medicine physician in Laguna Niguel, California
Dr. Steffan practices at John P Meehan III in Laguna Niguel, California.
Dr. Steffan's NPI, 1790758431, was assigned on February 13, 2006. Dr. Steffan graduated from UC San Diego School of Medicine in 1979. Dr. Steffan holds California license G42830.
- NPI
- 1790758431NPI Registry (opens in a new tab)
- NPI enumeration date
- February 13, 2006
- NPI status
- Active
- Practice phone
- (949) 643-9111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William C. Steffan practices at John P Meehan III in Laguna Niguel, California
Dr. Steffan's primary practice is John P Meehan III, at 27231 La Paz Rd Ste A Suite A, Laguna Niguel, CA 92677-3627. The practice phone is (949) 643-9111.
- John P Meehan III27231 La Paz Rd Ste A Suite A, Laguna Niguel, CA 92677-3627Phone(949) 643-9111
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William C. Steffan is affiliated with 1 site of care and 1 medical group
Dr. Steffan's primary practice is John P Meehan III in Laguna Niguel, California. Dmand AI also links Dr. Steffan to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. William C. Steffan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Steffan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John P Meehan III | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William C. Steffan is one of 15,680 family medicine physicians in California
Family medicine is Dr. Steffan's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Steffan is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Family medicine physicians near Dr. Steffan
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. William C. Steffan billed Medicare for 929 services in 2018
CMS data shows 929 Medicare services from Dr. Steffan across 17 procedure codes in 2018. Medicare paid $25,966 for them. Every service was in an office.
Dr. Steffan's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Lab and pathology
- 2017: 6022018: 37937%
- Office and hospital visits
- 2017: 6032018: 30949%
- Surgery
- 2017: 2512018: 14343%
- Tests and treatments
- 2017: 1482018: 4172%
- Other services
- 2017: 852018: 3164%
- Imaging
- 2017: 732018: 2664%
Dr. Steffan compared with the California median for family medicine physicians, 2018
- Dr. Steffan
- California median
- Medicare services
- 929vs 2463.8 times
- Part D claims
- 104vs 83388% below
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Steffan's most billed Medicare procedure codes, 2018
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. Steffan and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William C. Steffan's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Steffan's median patient age at 68, with 24% women.
Dr. Steffan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women24%
- Men72%
Source: Dmand AI Patient Panel Data
Dr. William C. Steffan wrote 104 Medicare Part D claims in 2019
In 2019, Dr. Steffan wrote 104 Medicare Part D claims. Every claim was for a generic drug. They cover 4 drugs, with $1,459 in total drug cost. In 2018, CMS named 2,100 claims across 58 drugs.
Dr. Steffan's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 2,1002019: 10495%
Drugs named by CMS: 4 in 2019, 58 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. William C. Steffan received $785 in industry payments from 2016 to 2019
CMS Open Payments shows 13 general payments to Dr. Steffan from 8 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 86% of the total. Abbvie Inc. paid the most, $241.
General payments to Dr. Steffan by program year, 2016 to 2019
General payments to Dr. Steffan by kind, 2016 to 2019
- Food and beverage$67486%
- Entertainment$8611%
- Consulting fees$253%
Companies that paid Dr. Steffan the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William C. Steffan graduated from UC San Diego School of Medicine
Dr. Steffan graduated from UC San Diego School of Medicine in 1979.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. William C. Steffan accepts plans from 4 insurance carriers
Dr. Steffan is in network with 4 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
Plan types Dr. Steffan accepts, by number of carriers
- Medicare4
- PPO4
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. William C. Steffan'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| 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. William C. Steffan
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. William C. Steffan's NPI number?
Dr. William C. Steffan's NPI number is 1790758431. It was assigned on February 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William C. Steffan?
Dr. William C. Steffan is a family medicine physician in Laguna Niguel, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. William C. Steffan practice?
Dr. Steffan practices at 27231 La Paz Rd Ste A Suite A, Laguna Niguel, CA 92677-3627. Dr. Steffan's primary practice is John P Meehan III in Laguna Niguel, California. Dmand AI also links Dr. Steffan to 1 medical group.
What is Dr. William C. Steffan's office phone number?
The practice phone on file for Dr. Steffan is (949) 643-9111.
What is Dr. William C. Steffan's medical license number?
Dr. Steffan holds California license G42830.
Does Dr. William C. Steffan accept Medicare?
Yes. CMS data shows Dr. Steffan billed Medicare for 929 services in 2018.
What services does Dr. William C. Steffan bill to Medicare?
In 2018, Dr. Steffan's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and surgery: heart and blood vessels (36415).
Where did Dr. William C. Steffan go to medical school?
Dr. Steffan graduated from UC San Diego School of Medicine in 1979.
What drugs does Dr. William C. Steffan prescribe most?
In 2019 Medicare Part D data, Dr. Steffan's most prescribed drugs by claims were Atorvastatin Calcium, Simvastatin and Losartan Potassium.
Has Dr. William C. Steffan received payments from drug or device companies?
CMS Open Payments shows $785 in general payments to Dr. Steffan from 8 companies from 2016 to 2019. The largest total came from Abbvie Inc.
How long has Dr. William C. Steffan been practicing?
Dr. Steffan graduated from medical school in 1979, 47 years ago.
What insurance does Dr. William C. Steffan accept?
Dr. Steffan is in network with 4 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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