Dr. Lars Widdel, MD

  • Redding, CA
  • Neurosurgeon
NPI1447397708PAC ID9032380449
Medicare services, 2024
928
Medicare patients, 2024
469
Part D claims, 2024
124
Publications
7
Hospital affiliations
5
Practice address
2175 Rosaline Ave, Clairmont Hgts, Redding, CA 96001
Practice phone
Call (530) 225-6102
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Mercy Medical Center Redding

Hospital · Redding, California

See all 8 affiliations

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Dr. Lars Widdel is a neurosurgeon in Redding, California

Dr. Widdel practices at Mercy Medical Center Redding in Redding, California, part of CommonSpirit Health.

Dr. Widdel's NPI, 1447397708, was assigned on January 30, 2007. Dr. Widdel graduated from University of Chile in 2002. Dr. Widdel holds California license C171096.

NPI and contact details
Medicare PAC ID
9032380449
NPI enumeration date
January 30, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(530) 225-6102
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
50
Medical school graduation
2002

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Lars Widdel practices at Mercy Medical Center Redding in Redding, California

Dr. Widdel's primary practice is Mercy Medical Center Redding, at 2175 Rosaline Ave, Clairmont Hgts, Redding, CA 96001 in Shasta County. The practice phone is (530) 225-6102.

Source: Dmand AI Affiliation Data

Dr. Lars Widdel is affiliated with 7 sites of care and 1 medical group

Dr. Widdel's primary practice is Mercy Medical Center Redding in Redding, California, part of CommonSpirit Health. Dr. Widdel is also affiliated with Dignity Health - St. Elizabeth Community Hospital. The medical group on file is Mercy Medical Group. Dmand AI also links Dr. Widdel to 3 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account.

See all 8 affiliations for Dr. Widdel

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Lars Widdel's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Widdel practices, 7 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Mercy Medical Center ReddingAvailable with a free account
+6 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Lars Widdel is one of 846 neurosurgeons in California

Neurological surgery is Dr. Widdel's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Widdel is board certified in neurological surgery by the American Board of Neurological Surgery. Dmand AI has Dr. Widdel's licenses on file in 4 states: California, Colorado, Wyoming and Alabama.

Specialties and state licenses

  • Neurological surgery, CaliforniaPrimaryLicense C171096 · 2020 to 2026 · taxonomy 207T00000X
  • Colorado license2008 to 2027
  • Wyoming license2020 to 2025
  • Alabama license2020 to 2021

Clinical focus

Dmand AI lists back and neck pain treatment without fusion, craniotomy, lower back pain, muscle pain, fibromyalgia, and limb pain, neck pain and spine problems, spinal fusion and thoracic spine disorders among the conditions Dr. Widdel treats.

Neurosurgeons near Dr. Widdel

Counts of neurosurgeons 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. Lars Widdel billed Medicare for 928 services in 2024

CMS data shows 928 Medicare services from Dr. Widdel across 20 procedure codes in 2024, for 469 Medicare patients. Medicare paid $216,446 for them.

Medicare services, 2024928
Medicare patients469
Paid by Medicare$216,446
Procedure codes20

Dr. Widdel's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 5552024: 62012%
Surgery
2023: 2382024: 30829%

Where Dr. Widdel's Medicare services took place, 2024

  • In an office51455%
  • In a facility41445%

Dr. Widdel compared with the California median for neurosurgeons, 2024

  • Dr. Widdel
  • California median
Medicare services
928vs 2164.3 times
Medicare patients
469vs 1543.0 times
Part D claims
51vs 2696% above

Medians across 679 neurosurgeons in California with Dmand AI profiles that report each measure.

Dr. Widdel'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.

See all procedures by Dr. Widdel

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Lars Widdel treated 469 Medicare patients in 2024, average age 73

CMS counts 469 Medicare patients who saw Dr. Widdel in 2024. The largest group is 65 to 74, with 213 patients. 75% of them have arthritis, and 75% have high blood pressure. 27% are also on Medicaid. Their average risk score is 1.35, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Widdel's median patient age at 67, with 50% women.

Medicare patients, 2024469
Average age73
Average risk score1.35
Also on Medicaid27%

Dr. Widdel's Medicare patients by age, 2024

Dr. Widdel's Medicare patients by sex, 2024

  • Women25655%
  • Men21345%

Chronic conditions among Dr. Widdel's Medicare patients, 2024

  1. Arthritis75%
  2. High blood pressure75%
  3. High cholesterol72%
  4. Anxiety32%
  5. Diabetes32%
  6. Mood disorders30%
  7. Depression27%
  8. Ischemic heart disease24%

Share of Medicare patients with each condition. A patient can have several.

Dr. Widdel's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women50%
  • Men50%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Lars Widdel wrote 124 Medicare Part D claims in 2024

In 2024, Dr. Widdel wrote 124 Medicare Part D claims for 72 patients. 97% of them were for generic drugs. CMS names the drug for 51 of them, across 2 drugs with 11 or more claims each, at $298 in total drug cost. In 2023, CMS named 50 claims across 3 drugs.

Part D claims, 2024124
Drugs named by CMS2
Total drug cost$298
Part D patients72

Dr. Widdel's Part D claims by kind of drug, 2024

  • Generic120 claims97%
  • Brand-name and other4 claims3%

Dr. Widdel'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. Widdel's Part D claims, 2024

  • Opioids53%66 of 124 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: 502024: 512%

Drugs named by CMS: 2 in 2024, 3 in 2023.

See all prescribing by Dr. Widdel

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. Lars Widdel ranks in the 94th percentile for laminectomy or laminotomy (partial removal of spine bones) in Medicare

Dr. Widdel accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Widdel as offering telehealth. CMS counts 102 procedures of laminectomy or laminotomy (partial removal of spine bones) by Dr. Widdel, more than 94% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Where Dr. Widdel ranks in Medicare procedure volume

Spinal fusion
93rd percentile240 procedures
Laminectomy or laminotomy (partial removal of spine bones)
94th percentile102 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Lars Widdel has 7 publications on record

Dmand AI links 7 papers to Dr. Widdel in 2010. 2010 was the busiest year, with 2. The most frequent topics are Magnetic Resonance Imaging, Diagnosis, Differential and Meninges. Dr. Widdel's most frequent co-authors are Janice Kerr, MD and Kevin O. Lillehei, MD.

Papers7

Topics Dr. Widdel writes about most

  • Magnetic Resonance Imaging
  • Diagnosis, Differential
  • Meninges

Dr. Widdel's most frequent co-authors

Recent publications by Dr. Widdel

See all 7 publications and co-authors

See who Dr. Widdel researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Widdel works with, so you can find a warm path to the right neurosurgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Lars Widdel received $147 in industry payments from 2016 to 2022

CMS Open Payments shows 2 general payments to Dr. Widdel from 2 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $126.

General payments to Dr. Widdel by program year, 2016 to 2022

Companies that paid Dr. Widdel the most, 2016 to 2022

Share is of all general payments to this clinician.

See all payments to Dr. Widdel

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Lars Widdel has 1 award and honors on record

Dmand AI lists 1 award for Dr. Widdel, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Widdel

  1. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Lars Widdel graduated from University of Chile

Dr. Widdel graduated from University of Chile in 2002. Dr. Widdel is a member of AANS and CNS.

  1. Medical schoolUniversity of Chile
  2. Board certified in neurological surgeryAmerican Board of Neurological Surgery

Source: Dmand AI Professional Profile Data

Dr. Lars Widdel accepts plans from 13 insurance carriers

Dr. Widdel is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • Alliant Health Plans
  • +5 more carriersWith a free account

Plan types Dr. Widdel accepts, by number of carriers

  1. PPO9
  2. Medicare8
  3. HMO6
  4. EPO4
  5. POS4

Source: Dmand AI Insurance Network Data

Sources for Dr. Lars Widdel's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Lars Widdel

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. Lars Widdel's NPI number?

Dr. Lars Widdel's NPI number is 1447397708. It was assigned on January 30, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Lars Widdel?

Dr. Lars Widdel is a neurosurgeon in Redding, California. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).

Where does Dr. Lars Widdel practice?

Dr. Widdel practices at 2175 Rosaline Ave, Clairmont Hgts, Redding, CA 96001. Dr. Widdel's primary practice is Mercy Medical Center Redding in Redding, California, part of CommonSpirit Health. Dmand AI also links Dr. Widdel to 3 hospitals, 1 group practice or clinic and 1 home health agency.

What is Dr. Lars Widdel's office phone number?

The practice phone on file for Dr. Widdel is (530) 225-6102.

What is Dr. Lars Widdel's medical license number?

Dr. Widdel holds California license C171096, one of the licenses on file in 4 states.

Which states has Dr. Lars Widdel been licensed in?

Dmand AI has state licenses on file for Dr. Widdel in California (2020 to 2026), Colorado (2008 to 2027), Wyoming (2020 to 2025) and Alabama (2020 to 2021).

Which hospitals is Dr. Lars Widdel affiliated with?

Dr. Widdel practices at Mercy Medical Center Redding in Redding, California. Dr. Widdel is also affiliated with Dignity Health - St. Elizabeth Community Hospital. Dmand AI links Dr. Widdel to 3 more hospitals.

What medical group is Dr. Lars Widdel part of?

Dr. Widdel is linked to Mercy Medical Group.

Does Dr. Lars Widdel accept Medicare?

Yes. CMS data shows Dr. Widdel billed Medicare for 928 services in 2024, and Dr. Widdel accepts Medicare assignment.

Does Dr. Lars Widdel offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Widdel as offering telehealth services.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Lars Widdel see?

CMS counts 469 Medicare patients who saw Dr. Widdel in 2024, with an average age of 73.

Is Dr. Lars Widdel board certified?

Yes. Dr. Widdel is board certified in neurological surgery by the American Board of Neurological Surgery.

What services does Dr. Lars Widdel bill to Medicare?

In 2024, Dr. Widdel's most billed Medicare services were office visit, established patient (99213), office visit, new patient (99204) and hospital inpatient care (99222).

Where did Dr. Lars Widdel go to medical school?

Dr. Widdel graduated from University of Chile in 2002.

What drugs does Dr. Lars Widdel prescribe most?

In 2024 Medicare Part D data, Dr. Widdel's most prescribed drugs by claims were Tramadol HCl and Hydrocodone-Acetaminophen.

Has Dr. Lars Widdel received payments from drug or device companies?

CMS Open Payments shows $147 in general payments to Dr. Widdel from 2 companies from 2016 to 2022. The largest total came from Medtronic, Inc.

How long has Dr. Lars Widdel been practicing?

Dr. Widdel graduated from medical school in 2002, 24 years ago.

Does Dr. Lars Widdel do research?

Dmand AI links 7 publications to Dr. Widdel.

Who does Dr. Lars Widdel publish with?

Dr. Widdel's most frequent co-authors are Janice Kerr, MD (1 shared paper) and Kevin O. Lillehei, MD (1 shared paper).

What insurance does Dr. Lars Widdel accept?

Dr. Widdel is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

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