KARAPET GUYUMDZHYAN CRNA
NPI 1215257548
Nurse Anesthetist, Certified Registered in Waltham, MA
About Karapet Guyumdzhyan Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KARAPET GUYUMDZHYAN CRNA (NPI 1215257548) is an individual nurse anesthetist, certified registered in Waltham, Massachusetts, licensed in Massachusetts (RN2278195) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS, is affiliated with Emerson Hospital -, and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses
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
Karapet Guyumdzhyan Crna 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
9Medicare enrollment records show Karapet Guyumdzhyan reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Needham, MA 02492
- Reassigned Medicare billing, Massachusetts enrollment
- 556 clinicians in this Medicare group
Concord, MA 01742
- Reassigned Medicare billing, Massachusetts enrollment
- 72 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Salem, MA 01970
- Reassigned Medicare billing, Massachusetts enrollment
- 994 clinicians in this Medicare group
Lawrence, MA 01842
- Reassigned Medicare billing, Massachusetts enrollment
- 231 clinicians in this Medicare group
Worcester, MA 01655
- Reassigned Medicare billing, Massachusetts enrollment
- 2,902 clinicians in this Medicare group
Fall River, MA 02721
- Reassigned Medicare billing, Massachusetts enrollment
- 347 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 4
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.
Emerson Hospital -
Acute Care Hospitals · W Concord, MAUmass Memorial Medical Center/University Campus
Acute Care Hospitals · Worcester, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02451 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALTHAM, MA 02451
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 Karapet Guyumdzhyan's NPI number?
The NPI number for Karapet Guyumdzhyan is 1215257548. It was assigned to this individual provider in the NPPES registry on June 9, 2010.
Where is Karapet Guyumdzhyan located?
Karapet Guyumdzhyan practices at 1440 Main St, Waltham, MA 02451. The listed phone number is (781) 891-9300.
What is Karapet Guyumdzhyan's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Karapet Guyumdzhyan enrolled in Medicare?
Yes. Karapet Guyumdzhyan 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 Karapet Guyumdzhyan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karapet Guyumdzhyan reassigns Medicare benefits to 9 organizations: Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (Needham, MA), Emerson Practice Associates II, Inc. (Concord, MA), Brigham & Womens Physicians Organization Inc (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and 4 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 Karapet Guyumdzhyan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Karapet Guyumdzhyan affiliated with any hospitals?
According to CMS data, Karapet Guyumdzhyan is affiliated with Emerson Hospital - and Umass Memorial Medical Center/University Campus.
When was this NPI record last updated?
The NPPES record for Karapet Guyumdzhyan was last updated on January 9, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Karapet Guyumdzhyan, CRNA · NPI 1215257548
Nurse Anesthetist, Certified Registered physician in Waltham, Massachusetts. Individual provider, active in the CMS NPPES registry since June 9, 2010.
## Identity
- **NPI:** 1215257548 (Entity type: Individual)
- **Enumerated:** June 9, 2010
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** RN2278195 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 1440 MAIN ST, Waltham, MA 02451-1631
- **Phone:** (781) 891-9300 · **Fax:** (781) 891-9305
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 9 organizations under Medicare reassignment (form CMS-855R): Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (NPI 1255818472, Needham, MA); Emerson Practice Associates II, Inc. (NPI 1427383645, Concord, MA); Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** January 9, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1215257548) · Data from the CMS NPPES public registry.