Theresa Louise Mortensen, N.P.
Nurse Practitioner · Santa Rosa, CA
Theresa Louise Mortensen, N.P. is a nurse practitioner with a practice address in Santa Rosa, California, and NPI 1972683753, issued on Oct 16, 2006. Check the license (California 402482, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Theresa Louise Mortensen
- Credential
- N.P.
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 402482 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3555 Round Barn Cir, Santa Rosa, CA 95403
- Phone
- (707) 528-1050
- Enumerated
- Oct 16, 2006
- Record last updated
- Nov 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (707) 525-3874
- Medicaid ID
- RN402482 CA
- Medicare enrollment
- Enrolled (PECOS I20040220000454); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 3555 Round Barn Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Theresa Louise Mortensen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 402482Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% more Medicare Part D claims than the average nurse practitioner in 2024
1,168 Medicare Part D claims for 406 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims. 76 claims were for opioids.
Most prescribed
- Eliquis55 claims
- Letrozole53 claims
- Acyclovir51 claims
- Anastrozole45 claims
- Hydroxyurea44 claims
- Ondansetron Hcl43 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $974.20
29 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Providence Medical FoundationPetaluma, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Theresa Louise Mortensen among 8,223 nurse practitioner records in California
Theresa Louise Mortensen, N.P. is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 82% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2002 · median 2017 among the 3,425 with a school on file
- Record last updated2021 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
70 nurse practitioner records list a practice address in Santa Rosa
They are 70 of the 6,884 NPPES records with a practice address in Santa Rosa, and 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in Santa Rosa → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Nayabei Barretto, N.P.Santa Rosa, CA 954031407145477
- Kalanete Baruch, NPSanta Rosa, CA 954031184958696
- Danna Brock, CNPSanta Rosa, CA 954031215286976
- Carolina Dehesa Rosillo, F.N.P.Santa Rosa, CA 954031770990491
- Mara Iaconi, ANP-CSanta Rosa, CA 954031528333481
- Andrea Ibbison, CRNASanta Rosa, CA 954031932393584
- Susan Laliberte, N.P.Santa Rosa, CA 954031376575829
- Bonnie McDonell, NPSanta Rosa, CA 954031437211380
Common questions
What is Theresa Louise Mortensen, N.P.'s NPI number?
Theresa Louise Mortensen, N.P.'s National Provider Identifier (NPI) is 1972683753, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Theresa Louise Mortensen, N.P. located?
The NPPES record lists a practice address at 3555 Round Barn Cir, Santa Rosa, CA, 95403. Phone: (707) 528-1050. Providers update this record themselves, so call before visiting.
How can I verify Theresa Louise Mortensen, N.P.'s license?
NPPES lists California license number 402482, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Theresa Louise Mortensen, N.P. prescribe under Medicare Part D?
In 2024, Theresa Louise Mortensen, N.P. had 1,168 Medicare Part D claims for 406 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.