Lawrence Douglas Drewsen, MD - Medicare Anesthesiology in Phoenix, AZ

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Lawrence Douglas Drewsen, MD is a medicare enrolled "Anesthesiology" physician in Phoenix, Arizona. He went to Medical College Of Wisconsin and graduated in 1992 and has 34 years of diverse experience with area of expertise as Anesthesiology. He is a member of the group practice Mchs Hospitals Inc, Yuma Regional Medical Center and his current practice location is 1850 N Central Ave, Ste 1600, Phoenix, Arizona. You can reach out to his office (for appointments etc.) via phone at (602) 744-4765.

Lawrence Douglas Drewsen is licensed to practice in Arizona (license number 24018) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1184696239.

Contact Information

Lawrence Douglas Drewsen, MD
1850 N Central Ave, Ste 1600,
Phoenix, AZ 85004-4633
(602) 744-4765
(602) 744-4799

Map and Direction




Physician's Profile

Full NameLawrence Douglas Drewsen
GenderMale
SpecialityAnesthesiology
Experience34 Years
Location1850 N Central Ave, Phoenix, Arizona
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Lawrence Douglas Drewsen attended and graduated from Medical College Of Wisconsin in 1992
  NPI Data:
  • NPI Number: 1184696239
  • Provider Enumeration Date: 02/03/2006
  • Last Update Date: 02/03/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 6901090018
  • Enrollment ID: I20240710002889

Medical Identifiers

Medical identifiers for Lawrence Douglas Drewsen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184696239NPI-NPPES
050050760OtherMEDICARE RAILROAD
350207MedicaidAZ

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207L00000XAnesthesiology 34966-20 (Wisconsin)Secondary
207L00000XAnesthesiology 24018 (Arizona)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Yuma Regional Medical CenterYuma, AZHospital
Marshfield Medical Center - WestonWeston, WIHospital
Marshfield Medical Center - MinocquaMinocqua, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mchs Hospitals Inc56980711731195
Yuma Regional Medical Center2062314826367

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Lawrence Douglas Drewsen allows following entities to bill medicare on his behalf.
Entity NameMarshfield Clinic Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952347981
PECOS PAC ID: 2264345206
Enrollment ID: O20031106000590
Entity NameBeaver Dam Community Hospitals Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972188555
PECOS PAC ID: 2567370539
Enrollment ID: O20040210000666
Entity NameMemorial Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346239373
PECOS PAC ID: 2365433224
Enrollment ID: O20040519001426
Entity NameFlambeau Hospital, Inc.
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1700963048
PECOS PAC ID: 9032029871
Enrollment ID: O20070828000478
Entity NameMemorial Hospital Inc
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1346239373
PECOS PAC ID: 2365433224
Enrollment ID: O20110526000807
Entity NameMchs Hospitals Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093221434
PECOS PAC ID: 5698071173
Enrollment ID: O20180208000096
Entity NameLakeview Medical Center Inc of Rice Lake
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093201832
PECOS PAC ID: 6103737820
Enrollment ID: O20180817001484
Entity NameMchs Hospitals Inc
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1952890873
PECOS PAC ID: 5698071173
Enrollment ID: O20180904002962
Entity NameFlambeau Hospital, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194317966
PECOS PAC ID: 9032029871
Enrollment ID: O20210409000059
Entity NameVituity-wisconsin Anesthesia SC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821831975
PECOS PAC ID: 2163968819
Enrollment ID: O20240718002237

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Lawrence Douglas Drewsen is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Lawrence Douglas Drewsen, MD
1850 N Central Ave Ste 1600,
Phoenix, AZ 85004-4633

Ph: (602) 744-4765		Lawrence Douglas Drewsen, MD
1850 N Central Ave, Ste 1600,
Phoenix, AZ 85004-4633

Ph: (602) 744-4765

Reviews and Comments


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Jeffrey Parker Morray, MD
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Dr. Eric L Pedicini, DO
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Practice Location: 1850 N Central Ave, Suite1600, Phoenix, AZ 85004
Phone: 602-262-8900    Fax: 602-262-8890

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.