Dr. Sonja Stumme Krafcik, MD
- Medicare services, 2024
- 914
- Medicare patients, 2024
- 260
- Part D claims, 2024
- 9,823
- Publications
- 1
- Hospital affiliations
- 3
- Practice address
- 24451 Health Center Drive, Laguna Hills, CA 92653
- Practice phone
- Call (949) 837-4500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Krafcik'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. Sonja Stumme Krafcik is an internist in Laguna Hills, California
Dr. Krafcik practices at MemorialCare Saddleback Medical Center in Laguna Hills, California, part of MemorialCare Health System.
Dr. Krafcik's NPI, 1598767170, was assigned on August 12, 2005. Dr. Krafcik graduated from Baylor College Of Medicine in 1990. Dr. Krafcik holds California license C51621.
- NPI
- 1598767170NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587629712
- NPI enumeration date
- August 12, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (949) 837-4500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sonja Stumme Krafcik practices at MemorialCare Saddleback Medical Center in Laguna Hills, California
Dr. Krafcik's primary practice is MemorialCare Saddleback Medical Center, at 24451 Health Center Drive, Laguna Hills, CA 92653 in Orange County. The practice phone is (949) 837-4500.
- MemorialCare Saddleback Medical Center24451 Health Center Drive, Laguna Hills, CA 92653 · Orange CountyPhone(949) 837-4500
Source: Dmand AI Affiliation Data
Dr. Sonja Stumme Krafcik is affiliated with 5 sites of care and 1 medical group
Dr. Krafcik's primary practice is MemorialCare Saddleback Medical Center in Laguna Hills, California, part of MemorialCare Health System. Dr. Krafcik is also affiliated with Hoag Hospital Newport Beach. The medical group on file is MemorialCare Medical Group. Dmand AI also links Dr. Krafcik to 1 more hospital and 2 home health agencies, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sonja Stumme Krafcik's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Krafcik practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MemorialCare Saddleback Medical Center | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across MemorialCare Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Sonja Stumme Krafcik is one of 16,751 internists in California
Internal medicine is Dr. Krafcik's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Krafcik is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Krafcik's licenses on file in 2 states: California and Michigan.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Michigan license
Clinical focus
Dmand AI lists acid reflux, acute mini-stroke (TIA), acute sinusitis, acute skin infection, adjustment disease, aneurysm, ankle or foot injury and anxiety among the conditions Dr. Krafcik treats.
Internists near Dr. Krafcik
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. Sonja Stumme Krafcik billed Medicare for 914 services in 2024
CMS data shows 914 Medicare services from Dr. Krafcik across 9 procedure codes in 2024, for 260 Medicare patients. Medicare paid $70,026 for them. Every service was in an office.
Dr. Krafcik's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5222024: 40822%
- Other services
- 2023: 2692024: 2507%
- Surgery
- 2023: 1612024: 13814%
- Tests and treatments
- 2023: 1442024: 11818%
Dr. Krafcik compared with the California median for internists, 2024
- Dr. Krafcik
- California median
- Medicare services
- 914vs 3612.5 times
- Medicare patients
- 260vs 15172% above
- Part D claims
- 9,048vs 42121.5 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Krafcik'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. Krafcik?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Krafcik and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Sonja Stumme Krafcik treated 260 Medicare patients in 2024, average age 77
CMS counts 260 Medicare patients who saw Dr. Krafcik in 2024. The largest group is 75 to 84, with 129 patients. 67% of them have high cholesterol, and 63% have high blood pressure. Their average risk score is 0.97, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Krafcik's median patient age at 68, with 69% women.
Dr. Krafcik's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Krafcik's Medicare patients by sex, 2024
- Women19374%
- Men6726%
Chronic conditions among Dr. Krafcik's Medicare patients, 2024
- High cholesterol67%
- High blood pressure63%
- Arthritis39%
- Osteoporosis24%
- Ischemic heart disease19%
- Cancer17%
- Chronic kidney disease16%
- Diabetes16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Krafcik'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
- Women69%
- Men29%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sonja Stumme Krafcik wrote 9,823 Medicare Part D claims in 2024
In 2024, Dr. Krafcik wrote 9,823 Medicare Part D claims for 614 patients. 88% of them were for generic drugs. CMS names the drug for 9,048 of them, across 159 drugs with 11 or more claims each, at $827,901 in total drug cost. In 2023, CMS named 8,130 claims across 140 drugs.
Dr. Krafcik's Part D claims by kind of drug, 2024
- Generic8,597 claims88%
- Brand-name1,207 claims12%
- Other19 claims0%
Dr. Krafcik'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. Krafcik's Part D claims, 2024
- Opioids2%150 of 9,823 claims
- Antibiotics4%371 of 9,823 claims
- Antipsychotics, patients 65 and over0%28 of 9,823 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: 8,1302024: 9,04811%
Drugs named by CMS: 159 in 2024, 140 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. Sonja Stumme Krafcik offers telehealth to Medicare patients
Dr. Krafcik accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Krafcik 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)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Sonja Stumme Krafcik has 1 publication on record
Dmand AI links 1 paper to Dr. Krafcik.
Recent publications by Dr. Krafcik
See who Dr. Krafcik researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Krafcik works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Sonja Stumme Krafcik received $36 in industry payments from 2018 to 2020
CMS Open Payments shows 2 general payments to Dr. Krafcik from 2 drug and device companies from 2018 to 2020. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $24.
General payments to Dr. Krafcik by program year, 2018 to 2020
Companies that paid Dr. Krafcik the most, 2018 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sonja Stumme Krafcik has 1 award and honors on record
Dmand AI lists 1 award for Dr. Krafcik, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Krafcik
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Sonja Stumme Krafcik graduated from Baylor College Of Medicine
Dr. Krafcik graduated from Baylor College Of Medicine in 1990.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Sonja Stumme Krafcik accepts plans from 14 insurance carriers
Dr. Krafcik is in network with 14 carriers, including Aetna, Excellus BlueCross BlueShield and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Excellus BlueCross BlueShield
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +6 more carriersWith a free account
Plan types Dr. Krafcik accepts, by number of carriers
- PPO10
- Medicare8
- HMO7
- EPO5
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Sonja Stumme Krafcik'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 DataDmand AI Org Hierarchy 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) |
| 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) |
| 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. Sonja Stumme Krafcik
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. Sonja Stumme Krafcik's NPI number?
Dr. Sonja Stumme Krafcik's NPI number is 1598767170. It was assigned on August 12, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Sonja Stumme Krafcik?
Dr. Sonja Stumme Krafcik is an internist in Laguna Hills, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Sonja Stumme Krafcik practice?
Dr. Krafcik practices at 24451 Health Center Drive, Laguna Hills, CA 92653. Dr. Krafcik's primary practice is MemorialCare Saddleback Medical Center in Laguna Hills, California, part of MemorialCare Health System. Dmand AI also links Dr. Krafcik to 1 hospital and 2 home health agencies.
What is Dr. Sonja Stumme Krafcik's office phone number?
The practice phone on file for Dr. Krafcik is (949) 837-4500.
What is Dr. Sonja Stumme Krafcik's medical license number?
Dr. Krafcik holds California license C51621, one of the licenses on file in 2 states.
Which states has Dr. Sonja Stumme Krafcik been licensed in?
Dmand AI has state licenses on file for Dr. Krafcik in California (2004 to 2026) and Michigan (1992 to 2005).
Which hospitals is Dr. Sonja Stumme Krafcik affiliated with?
Dr. Krafcik practices at MemorialCare Saddleback Medical Center in Laguna Hills, California. Dr. Krafcik is also affiliated with Hoag Hospital Newport Beach. Dmand AI links Dr. Krafcik to 1 more hospital.
What medical group is Dr. Sonja Stumme Krafcik part of?
Dr. Krafcik is linked to MemorialCare Medical Group.
Does Dr. Sonja Stumme Krafcik accept Medicare?
Yes. CMS data shows Dr. Krafcik billed Medicare for 914 services in 2024, and Dr. Krafcik accepts Medicare assignment.
Does Dr. Sonja Stumme Krafcik offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Krafcik as offering telehealth services.
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Sonja Stumme Krafcik see?
CMS counts 260 Medicare patients who saw Dr. Krafcik in 2024, with an average age of 77.
Is Dr. Sonja Stumme Krafcik board certified?
Yes. Dr. Krafcik is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Sonja Stumme Krafcik bill to Medicare?
In 2024, Dr. Krafcik's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and medicare service (G0439).
Where did Dr. Sonja Stumme Krafcik go to medical school?
Dr. Krafcik graduated from Baylor College Of Medicine in 1990.
What drugs does Dr. Sonja Stumme Krafcik prescribe most?
In 2024 Medicare Part D data, Dr. Krafcik's most prescribed drugs by claims were Amlodipine Besylate, Levothyroxine Sodium and Atorvastatin Calcium.
Has Dr. Sonja Stumme Krafcik received payments from drug or device companies?
CMS Open Payments shows $36 in general payments to Dr. Krafcik from 2 companies from 2018 to 2020. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Sonja Stumme Krafcik been practicing?
Dr. Krafcik graduated from medical school in 1990, 36 years ago.
Does Dr. Sonja Stumme Krafcik do research?
Dmand AI links 1 publication to Dr. Krafcik.
What insurance does Dr. Sonja Stumme Krafcik accept?
Dr. Krafcik is in network with 14 carriers, including Aetna, Excellus BlueCross BlueShield and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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