Crystal Sommerfeld, APNP
- Medicare patients, 2024
- 71
- Part D claims, 2024
- 212
- Hospital affiliations
- 3
- Medical groups
- 2
- State license
- 1
- Practice address
- 225 Memorial Drive, Berlin, WI 54923
- Practice phone
- Call (920) 361-1313
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Crystal Sommerfeld'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.
Crystal Sommerfeld is a family nurse practitioner in Berlin, Wisconsin
Crystal Sommerfeld practices at ThedaCare Medical Center-Berlin in Berlin, Wisconsin, part of Froedtert ThedaCare Health.
Crystal Sommerfeld's NPI, 1083490239, was assigned on September 5, 2023. Crystal Sommerfeld holds Wisconsin license 1414633.
- NPI
- 1083490239NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901254507
- NPI enumeration date
- September 5, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (920) 361-1313
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Crystal Sommerfeld practices at ThedaCare Medical Center-Berlin in Berlin, Wisconsin
Crystal Sommerfeld's primary practice is ThedaCare Medical Center-Berlin, at 225 Memorial Drive, Berlin, WI 54923 in Green Lake County. The practice phone is (920) 361-1313.
- ThedaCare Medical Center-Berlin225 Memorial Drive, Berlin, WI 54923 · Green Lake CountyPhone(920) 361-1313
Source: Dmand AI Affiliation Data
Crystal Sommerfeld is affiliated with 4 sites of care and 2 medical groups
Crystal Sommerfeld's primary practice is ThedaCare Medical Center-Berlin in Berlin, Wisconsin, part of Froedtert ThedaCare Health. Crystal Sommerfeld is also affiliated with ThedaCare Regional Medical Center-Neenah. The medical group on file is ThedaCare Behavioral Health Walk-in Care-Neenah. Dmand AI also links Crystal Sommerfeld to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Crystal Sommerfeld's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Crystal Sommerfeld practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ThedaCare Medical Center-Berlin | Available with a free account |
| +3 more sites and 1 medical group | 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 Froedtert ThedaCare Health and 6.2K+ hospitals, with verified contacts in the same login.
Crystal Sommerfeld is one of 2,261 family nurse practitioners in Wisconsin
Family is Crystal Sommerfeld's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Crystal Sommerfeld is licensed in Wisconsin.
Specialties and state licenses
- Family nurse practitioner, WisconsinPrimary
Family nurse practitioners near Crystal Sommerfeld
Counts of family nurse practitioners 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
Crystal Sommerfeld treated 71 Medicare patients in 2024, average age 72
CMS counts 71 Medicare patients who saw Crystal Sommerfeld in 2024. The largest group is 65 to 74, with 30 patients. 75% of them have high cholesterol, and 65% have high blood pressure. Their average risk score is 1.18, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Crystal Sommerfeld's median patient age at 43, with 58% women.
Crystal Sommerfeld's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Crystal Sommerfeld's Medicare patients by sex, 2024
- Women3549%
- Men3651%
Chronic conditions among Crystal Sommerfeld's Medicare patients, 2024
- High cholesterol75%
- High blood pressure65%
- Arthritis42%
- Anxiety30%
- Mood disorders30%
- Depression28%
- Diabetes25%
- Asthma20%
Share of Medicare patients with each condition. A patient can have several.
Crystal Sommerfeld's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 43
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Crystal Sommerfeld wrote 212 Medicare Part D claims in 2024
In 2024, Crystal Sommerfeld wrote 212 Medicare Part D claims for 129 patients. 86% of them were for generic drugs.
Crystal Sommerfeld's Part D claims by kind of drug, 2024
- Generic182 claims86%
- Brand-name and other30 claims14%
Drug classes CMS tracks in Crystal Sommerfeld's Part D claims, 2024
- Antibiotics27%57 of 212 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Crystal Sommerfeld takes part in Medicare
Crystal Sommerfeld accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Sources for Crystal Sommerfeld'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 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 (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) |
| 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 Crystal Sommerfeld
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Crystal Sommerfeld's NPI number?
Crystal Sommerfeld's NPI number is 1083490239. It was assigned on September 5, 2023, and it is active in the NPI Registry.
What does Crystal Sommerfeld specialize in?
Crystal Sommerfeld is a family nurse practitioner in Berlin, Wisconsin. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Crystal Sommerfeld practice?
Crystal Sommerfeld practices at 225 Memorial Drive, Berlin, WI 54923. Crystal Sommerfeld's primary practice is ThedaCare Medical Center-Berlin in Berlin, Wisconsin, part of Froedtert ThedaCare Health. Dmand AI also links Crystal Sommerfeld to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Crystal Sommerfeld's office phone number?
The practice phone on file for Crystal Sommerfeld is (920) 361-1313.
What is Crystal Sommerfeld's medical license number?
Crystal Sommerfeld holds Wisconsin license 1414633.
Which hospitals is Crystal Sommerfeld affiliated with?
Crystal Sommerfeld practices at ThedaCare Medical Center-Berlin in Berlin, Wisconsin. Crystal Sommerfeld is also affiliated with ThedaCare Regional Medical Center-Neenah. Dmand AI links Crystal Sommerfeld to 1 more hospital.
What medical group is Crystal Sommerfeld part of?
Crystal Sommerfeld is linked to ThedaCare Behavioral Health Walk-in Care-Neenah. Dmand AI links Crystal Sommerfeld to 1 more medical group.
Does Crystal Sommerfeld accept Medicare?
Yes. CMS lists Crystal Sommerfeld as accepting Medicare assignment.
How many Medicare patients does Crystal Sommerfeld see?
CMS counts 71 Medicare patients who saw Crystal Sommerfeld in 2024, with an average age of 72.
How long has Crystal Sommerfeld been practicing?
Crystal Sommerfeld graduated from medical school in 2023, 3 years ago.
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