DR. LAWRENCE D. MASON M.D.
NPI 1669402194
Anesthesiology in Loves Park, IL
About Dr. Lawrence D. Mason M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LAWRENCE D. MASON M.D. (NPI 1669402194) is an individual anesthesiology provider in Loves Park, Illinois, licensed in Illinois (036-101899) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Uw Health, and is a graduate of University Of Michigan Medical School (1981).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Dr. Lawrence D. Mason M.d. 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 Reassignment
Medicare enrollment records show Lawrence Mason reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Loves Park, IL 61111
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Rockford Anesthesiologists Associated LLC
- 32 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Uw Health
Acute Care Hospitals · Rockford, ILMedicare 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.
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.
LOVES PARK, IL 61111
LOVES PARK, IL 61111
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 Mason's NPI number?
The NPI number for Lawrence Mason is 1669402194. It was assigned to this individual provider in the NPPES registry on July 3, 2006.
Where is Lawrence Mason located?
Lawrence Mason practices at 2202 Harlem Road Suite 200, Loves Park, IL 61111. The listed phone number is (815) 877-4848.
What is Lawrence Mason's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Lawrence Mason enrolled in Medicare?
Yes. Lawrence Mason 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 organization bills Medicare for Lawrence Mason's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lawrence Mason reassigns Medicare benefits to Rockford Anesthesiologists Associated, L.L.C. (Loves Park, IL). The 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 Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Lawrence Mason affiliated with any hospitals?
According to CMS data, Lawrence Mason is affiliated with Uw Health.
When was this NPI record last updated?
The NPPES record for Lawrence Mason was last updated on February 3, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.
# Dr. Lawrence D. Mason, M.D. · NPI 1669402194
Anesthesiology physician in Loves Park, Illinois. Individual provider, active in the CMS NPPES registry since July 3, 2006.
## Identity
- **NPI:** 1669402194 (Entity type: Individual)
- **Enumerated:** July 3, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 036-101899 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 2202 HARLEM ROAD, SUITE 200, Loves Park, IL 61111-2754
- **Phone:** (815) 877-4848 · **Fax:** (815) 654-5342
## 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:** Rockford Anesthesiologists Associated, L.L.C. (NPI 1639128598, Loves Park, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 1981
## Record status
- **NPPES last updated:** February 3, 2020
- **Other identifiers:** Medicaid 036101899 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1669402194) · Data from the CMS NPPES public registry.