Dr. Nicolaj Andersen, MD
- Part D claims, 2024
- 2,117
- Hospital affiliations
- 1
- Medical group
- 1
- Insurance carriers
- 2
- State licenses
- 2
- Practice address
- 401 Bicentennial Way, Santa Rosa, CA 95403
- Practice phone
- Call (707) 571-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Andersen'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. Nicolaj Andersen is a hematologist and oncologist in Santa Rosa, California
Dr. Andersen practices at Santa Rosa Medical Center in Santa Rosa, California, part of Kaiser Permanente.
Dr. Andersen's NPI, 1659455640, was assigned on October 25, 2006. Dr. Andersen graduated from University of Copenhagen Medical School in 1997. Dr. Andersen holds California license A90797.
- NPI
- 1659455640NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193741270
- NPI enumeration date
- October 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 571-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nicolaj Andersen practices at Santa Rosa Medical Center in Santa Rosa, California
Dr. Andersen's primary practice is Santa Rosa Medical Center, at 401 Bicentennial Way, Santa Rosa, CA 95403 in Sonoma County. The practice phone is (707) 571-4000.
- Santa Rosa Medical Center401 Bicentennial Way, Santa Rosa, CA 95403 · Sonoma CountyPhone(707) 571-4000
Source: Dmand AI Affiliation Data
Dr. Nicolaj Andersen is affiliated with 1 site of care and 1 medical group
Dr. Andersen's primary practice is Santa Rosa Medical Center in Santa Rosa, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nicolaj Andersen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Andersen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Santa Rosa Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nicolaj Andersen is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Andersen's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Andersen is board certified in medical oncology by the American Board of Internal Medicine. Dmand AI has Dr. Andersen's licenses on file in 2 states: California and Connecticut.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
- Connecticut license
Hematologists and oncologists near Dr. Andersen
Counts of hematologists and oncologists 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. Nicolaj Andersen's patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Dr. Andersen's median patient age at 63, with 54% women.
Dr. Andersen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women54%
- Men46%
Source: Dmand AI Patient Panel Data
Dr. Nicolaj Andersen wrote 2,117 Medicare Part D claims in 2024
In 2024, Dr. Andersen wrote 2,117 Medicare Part D claims for 316 patients. 60% of them were for generic drugs. CMS names the drug for 1,858 of them, across 43 drugs with 11 or more claims each, at $9,152,244 in total drug cost. In 2023, CMS named 2,110 claims across 48 drugs.
Dr. Andersen's Part D claims by kind of drug, 2024
- Generic1,262 claims60%
- Brand-name855 claims40%
Dr. Andersen'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. Andersen's Part D claims, 2024
- Opioids7%140 of 2,117 claims
- Antibiotics1%27 of 2,117 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: 2,1102024: 1,85812%
Drugs named by CMS: 43 in 2024, 48 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
How Dr. Nicolaj Andersen takes part in Medicare
Dr. Andersen 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)
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Dr. Nicolaj Andersen has 1 award and honors on record
Dmand AI lists 1 award for Dr. Andersen, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Andersen
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Nicolaj Andersen graduated from University of Copenhagen Medical School
Dr. Andersen graduated from University of Copenhagen Medical School in 1997.
- Medical school
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Nicolaj Andersen accepts plans from 2 insurance carriers
Dr. Andersen is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Andersen accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Nicolaj Andersen'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. Nicolaj Andersen
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. Nicolaj Andersen's NPI number?
Dr. Nicolaj Andersen's NPI number is 1659455640. It was assigned on October 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nicolaj Andersen?
Dr. Nicolaj Andersen is a hematologist and oncologist in Santa Rosa, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Nicolaj Andersen practice?
Dr. Andersen practices at 401 Bicentennial Way, Santa Rosa, CA 95403. Dr. Andersen's primary practice is Santa Rosa Medical Center in Santa Rosa, California, part of Kaiser Permanente.
What is Dr. Nicolaj Andersen's office phone number?
The practice phone on file for Dr. Andersen is (707) 571-4000.
What is Dr. Nicolaj Andersen's medical license number?
Dr. Andersen holds California license A90797, one of the licenses on file in 2 states.
Which states has Dr. Nicolaj Andersen been licensed in?
Dmand AI has state licenses on file for Dr. Andersen in California (2005 to 2027) and Connecticut (2002 to 2003).
Which hospitals is Dr. Nicolaj Andersen affiliated with?
Dr. Andersen practices at Santa Rosa Medical Center in Santa Rosa, California.
What medical group is Dr. Nicolaj Andersen part of?
Dr. Andersen is linked to The Permanente Medical Group, Inc.
Does Dr. Nicolaj Andersen accept Medicare?
Yes. CMS lists Dr. Andersen as accepting Medicare assignment.
Is Dr. Nicolaj Andersen board certified?
Yes. Dr. Andersen is board certified in medical oncology by the American Board of Internal Medicine.
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Where did Dr. Nicolaj Andersen go to medical school?
Dr. Andersen graduated from University of Copenhagen Medical School in 1997.
What drugs does Dr. Nicolaj Andersen prescribe most?
In 2024 Medicare Part D data, Dr. Andersen's most prescribed drugs by claims were Abiraterone Acetate, Brukinsa and Prednisone.
How long has Dr. Nicolaj Andersen been practicing?
Dr. Andersen graduated from medical school in 1997, 29 years ago.
What insurance does Dr. Nicolaj Andersen accept?
Dr. Andersen is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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