DR CRAIG S GUSTAFSON LLC
NPI 1982737946
Family Medicine in Ayer, MA
About Dr Craig S Gustafson Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR CRAIG S GUSTAFSON LLC (NPI 1982737946) is a healthcare organization registered as a family medicine in Ayer, Massachusetts and active in the NPI registry since March 2007. The organization maintains a secondary practice location in Harvard and lists Craig Gustafson, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr Craig S Gustafson Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Dr Craig S Gustafson LLC, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Dr Craig S Gustafson LLC's NPI number?
The NPI number for Dr Craig S Gustafson LLC is 1982737946. It was assigned to this organization in the NPPES registry on March 13, 2007.
Where is Dr Craig S Gustafson LLC located?
Dr Craig S Gustafson LLC is located at 190 Groton Rd, Ayer, MA 01432. The listed phone number is (978) 772-0698.
What is Dr Craig S Gustafson LLC's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Dr Craig S Gustafson LLC enrolled in Medicare?
Yes. Dr Craig S Gustafson LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Dr Craig S Gustafson LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Dr Craig S Gustafson LLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Dr Craig S Gustafson LLC was last updated on February 10, 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.
# Dr Craig S Gustafson Llc · NPI 1982737946
Family Medicine organization in Ayer, Massachusetts. Organization record, active in the CMS NPPES registry since March 13, 2007.
## Identity
- **NPI:** 1982737946 (Entity type: Organization)
- **Enumerated:** March 13, 2007
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Organization subpart:** No
- **Authorized official:** Craig Gustafson, OWNER
## Practice location
- **Address:** 190 GROTON RD, Ayer, MA 01432-1124
- **Phone:** (978) 772-0698 · **Fax:** (978) 772-0024
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Family Practice) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 10, 2026
- **Other identifiers:** Medicaid 9740091 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1982737946) · Data from the CMS NPPES public registry.