LAWRENCE DOUGLAS DREWSEN MD
NPI 1184696239
Anesthesiology in Phoenix, AZ
About Lawrence Douglas Drewsen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LAWRENCE DOUGLAS DREWSEN MD (NPI 1184696239) is an individual anesthesiology provider in Phoenix, Arizona, licensed in Arizona (24018) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Marshfield Medical Center - Weston, and maintains a secondary practice location in Weston.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Lawrence Douglas Drewsen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
10Medicare enrollment records show Lawrence Drewsen reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Phoenix, AZ 85024
- Reassigned Medicare billing, Arizona enrollment
- 518 clinicians in this Medicare group
Yuma, AZ 85364
- Reassigned Medicare billing, Arizona enrollment
- 557 clinicians in this Medicare group
Eau Claire, WI 54701
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 clinicians in this Medicare group
Chetek, WI 54728
- Reassigned Medicare billing, Wisconsin enrollment
- 1,616 clinicians in this Medicare group
Neillsville, WI 54456
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1346239373 (Wisconsin)
- 1,440 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Columbus, WI 53925
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Beaver Dam Community Hospitals Inc.
- 1,447 clinicians in this Medicare group
Plover, WI 54467
- Reassigned Medicare billing, Wisconsin enrollment
- 935 clinicians in this Medicare group
Park Falls, WI 54552
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1700963048 (Wisconsin)
- 1,351 clinicians in this Medicare group
Brookfield, WI 53045
- Reassigned Medicare billing, Wisconsin enrollment
- 210 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Marshfield Medical Center - Weston
Acute Care Hospitals · Weston, WIMarshfield Medical Center - Minocqua
Acute Care Hospitals · Minocqua, WIMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Lawrence Drewsen's NPI number?
The NPI number for Lawrence Drewsen is 1184696239. It was assigned to this individual provider in the NPPES registry on February 3, 2006.
Where is Lawrence Drewsen located?
Lawrence Drewsen practices at 1850 N Central Ave Ste 1600, Phoenix, AZ 85004. The listed phone number is (602) 744-4765.
What is Lawrence Drewsen's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Lawrence Drewsen enrolled in Medicare?
Yes. Lawrence Drewsen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Lawrence Drewsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lawrence Drewsen reassigns Medicare benefits to 10 organizations: Valley Anesthesiology Consultants, Inc. (Phoenix, AZ), Yuma Regional Medical Center (Yuma, AZ), Mchs Hospitals Inc (Eau Claire, WI), Lakeview Medical Center Inc Of Rice Lake (Chetek, WI), Memorial Hospital Inc (Neillsville, WI) and 5 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lawrence Drewsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lawrence Drewsen accept?
Health plans from Blue Cross Blue Shield of Arizona and Cigna HealthCare of Arizona, Inc list Lawrence Drewsen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Lawrence Drewsen affiliated with any hospitals?
According to CMS data, Lawrence Drewsen is affiliated with Marshfield Medical Center - Weston and Marshfield Medical Center - Minocqua.
When was this NPI record last updated?
The NPPES record for Lawrence Drewsen was last updated on February 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Lawrence Douglas Drewsen, MD · NPI 1184696239
Anesthesiology physician in Phoenix, Arizona. Individual provider, active in the CMS NPPES registry since February 3, 2006.
## Identity
- **NPI:** 1184696239 (Entity type: Individual)
- **Enumerated:** February 3, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 24018 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 1850 N CENTRAL AVE, STE 1600, Phoenix, AZ 85004-4633
- **Phone:** (602) 744-4765 · **Fax:** (602) 744-4799
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 10 organizations under Medicare reassignment (form CMS-855R): Valley Anesthesiology Consultants, Inc. (NPI 1285660704, Phoenix, AZ); Yuma Regional Medical Center (NPI 1194706655, Yuma, AZ); Mchs Hospitals Inc (NPI 1316416035, Eau Claire, WI); Lakeview Medical Center Inc Of Rice Lake (NPI 1659008605, Chetek, WI); Memorial Hospital Inc (NPI 1033701800, Neillsville, WI); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 1992
## Record status
- **NPPES last updated:** February 3, 2026
- **Other identifiers:** Other 050050760; Medicaid 350207 (AZ)
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Source: [NPI Profile](https://npiprofile.com/npi/1184696239) · Data from the CMS NPPES public registry.