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DR. ATHOS JOHN RASSIAS MD
NPI 1609961119
Anesthesiology - Critical Care Medicine in Lebanon, NH

Active since October 03, 2006PECOS EnrolledAccepts Medicare Assignment
76.01/100
CMS Quality Rating
CRITICAL CARE MEDICINE 1 MEDICAL CENTER DRIVE, DHMC, LEBANON, NH 03756(603) 650-4642(603) 650-0614 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Athos John Rassias Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ATHOS JOHN RASSIAS MD (NPI 1609961119) is an individual critical care medicine provider in Lebanon, New Hampshire, licensed in New Hampshire (9258) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Mary Hitchcock Memorial Hospital, and is a graduate of Warren Alpert Medical School Of Brown University (1989).

NPPES Registry Identity

NPI1609961119
Entity TypeIndividualMale
Primary Taxonomy207LC0200X
Provider Legal NameDR. ATHOS JOHN RASSIASCredential: MD
Location AddressCRITICAL CARE MEDICINE 1 MEDICAL CENTER DRIVE, DHMCLebanon, NH 03756
Mailing AddressCritical Care Medicine 1 Medical Center Drive, DhmcLebanon, NH 03756 · (603) 650-4642 · Fax (603) 650-0614
Phone(603) 650-4642
Fax(603) 650-0614
Sole ProprietorYes
Medical School CMSWarren Alpert Medical School Of Brown UniversityGraduated 1989
Enumeration DateOctober 3, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1609961119 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiology · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207LC0200X
License✔ Licensed in NH · 9258
Definition
An anesthesiologist, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedAnesthesiologyTaxonomy 207L00000X · License 9258 (NH)
CRITICAL CARE MEDICINE 1 MEDICAL CENTER DRIVE, Lebanon, NH 03756
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Athos John Rassias 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.

PECOS PAC ID4082632336
PECOS Enrollment IDI20051105000191
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 8

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.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
102 services60 patients
Anesthesia for procedure on heart and large blood vessels 00560
Anesthesia for heart and large blood vessel procedures involves using medications to block sensation, ensuring you don't feel pain during surgery. It can be general (you're asleep) or regional (part of your body is numbed). It helps ensure comfort and safety throughout the operation.
53 services53 patients
Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
45 services44 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
40 services32 patients
Insertion of tube in pulmonary artery for monitoring 93503
This procedure involves placing a tube into your pulmonary artery, which is a blood vessel in your lungs. The tube helps monitor heart function and blood flow, providing vital information for your treatment. It's typically done under local anesthesia to minimize discomfort.
20 services19 patients
Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) 00562
This procedure involves administering anesthesia to ensure comfort and safety during heart or large blood vessel operations. A heart-lung machine is used to take over the heart's function, allowing the surgeon to work on a still heart. Suitable for individuals aged 1 year and older.
13 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mary Hitchcock Memorial Hospital

Acute Care Hospitals · Lebanon, NH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300003
Location1 Medical Center DriveLebanon, NH 03756 · Grafton County
Emergency services Birthing friendly

Medicare 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.

76.01/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality65.31
Promoting Interoperability100
Improvement Activities40
Cost54.74

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 Athos Rassias's NPI number?

The NPI number for Athos Rassias is 1609961119. It was assigned to this individual provider in the NPPES registry on October 3, 2006.

Where is Athos Rassias located?

Athos Rassias practices at Critical Care Medicine 1 Medical Center Drive Dhmc, Lebanon, NH 03756. The listed phone number is (603) 650-4642.

What is Athos Rassias's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Critical Care Medicine, with taxonomy code 207LC0200X.

Is Athos Rassias enrolled in Medicare?

Yes. Athos Rassias 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.

Is Athos Rassias affiliated with any hospitals?

According to CMS data, Athos Rassias is affiliated with Mary Hitchcock Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Athos Rassias was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.