DR. TREVOR JOHN BAYLISS M.D.
NPI 1982821906
Internal Medicine - Hematology & Oncology in Pittsfield, MA

Q: What is Trevor Bayliss's NPI number?

The NPI number for Trevor Bayliss is 1982821906. It was assigned to this individual provider in the NPPES registry on April 19, 2007.

Q: What is Trevor Bayliss's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Trevor Bayliss was last updated on August 16, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.

Active since April 19, 2007PECOS EnrolledAccepts Medicare Assignment

165 TOR CT, PITTSFIELD, MA 01201(413) 443-6000 Get Directions Write a Review

NPPES record last updated: August 16, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Trevor John Bayliss M.d. NPPES

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

DR. TREVOR JOHN BAYLISS M.D. (NPI 1982821906) is an individual hematology & oncology provider in Pittsfield, Massachusetts, licensed in Massachusetts (254002) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with Berkshire Medical Center, and maintains a secondary practice location in Lebanon.

NPPES Registry Identity

NPI1982821906

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameDR. TREVOR JOHN BAYLISSCredential: M.D.

Location Address165 TOR CTPittsfield, MA 01201-3001

Mailing Address1 Medical Center Dr, Dartmouth-hichcock Medical CenterLebanon, NH 03756-1000 · (603) 650-8626

Phone(413) 443-6000

Sole ProprietorNo

Medical School CMSAlbany Medical College Of Union UniversityGraduated 2007

Enumeration DateApril 19, 2007

Last NPPES UpdateAugust 16, 2018

✔ NPI 1982821906 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in MA · 254002

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Also ListedInternal MedicineTaxonomy 207R00000X · License 14613 (NH)

165 TOR CT, Pittsfield, MA 01201

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Secondary Practice Location 1

Location 11 Medical Center Dr, Dartmouth-Hichcock Medical CenterLebanon, NH 03756-1000 · Phone (603) 650-8626

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.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

Dr. Trevor John Bayliss 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.

PECOS PAC ID1254525447

PECOS Enrollment IDI20130809000487

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.

Medicare Billing Reassignment

Medicare enrollment records show Trevor Bayliss reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Berkshire Faculty Services Inc

1.6 mi

Multi-Specialty

725 NORTH ST
Pittsfield, MA 01201

Reassigned Medicare billing, Massachusetts enrollment
405 clinicians in this Medicare group

NPI 1548212939 (413) 447-2752

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 12

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

566 services376 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

549 services192 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

180 services164 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

90 services90 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

83 services56 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

73 services60 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

57 services49 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

39 services39 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

36 services24 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

29 services24 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.

15 services14 patients

Smoking and tobacco use intensive counseling, 4-10 minutes 99406

This service provides brief, intensive counseling (4-10 minutes) to support you in quitting smoking or tobacco use. It involves discussing the risks of tobacco use, benefits of quitting, and strategies to help you stop. It's a critical step towards a healthier lifestyle.

13 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Berkshire Medical Center

Acute Care Hospitals · Pittsfield, MA

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number220046

Location725 North StreetPittsfield, MA 01201 · Berkshire County

Emergency services Birthing friendly

Baystate Medical Center

Acute Care Hospitals · Springfield, MA

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220077

Location759 Chestnut StreetSpringfield, MA 01199 · Hampden County

Emergency services Birthing friendly

Fairview Hospital

Critical Access Hospitals · Great Barrington, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number221302

Location29 Lewis AvenueGreat Barrington, MA 01230 · Berkshire County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$177.36 typical visit price

range $58.86 – $177.36

Typical copayment $44.34 (range $14.71 – $44.34)

Most-billed visit code 99205

Established Patient

$103.48 typical visit price

range $19.11 – $144.84

Typical copayment $25.87 (range $4.77 – $36.21)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 9

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Ostomy skin barrier, liquid (spray, brush, etc.), per oz A4369

DME-Orthotic Devices · category DF010N

1 supplier11 claims11 services$2.13 avg. paid by Medicare

Ostomy ring, each A4404

DME-Orthotic Devices · category DF010N

1 supplier11 claims110 services$1.42 avg. paid by Medicare

Ostomy skin barrier, pectin-based, paste, per ounce A4406

DME-Orthotic Devices · category DF010N

1 supplier11 claims44 services$5.02 avg. paid by Medicare

Ostomy skin barrier, with flange (solid, flexible or accordion), without built-in convexity, 4 x 4 inches or smaller, each A4414

DME-Orthotic Devices · category DF010N

1 supplier11 claims110 services$4.32 avg. paid by Medicare

Ostomy pouch, closed; for use on barrier with non-locking flange, with filter (2 piece), each A4419

DME-Orthotic Devices · category DF010N

1 supplier11 claims660 services$1.52 avg. paid by Medicare

Adhesive remover or solvent (for tape, cement or other adhesive), per ounce A4455

DME-Medical/Surgical Supplies · category DA000N

1 supplier11 claims22 services$1.24 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

SUSAN ALICE SMITH FNP

Nurse Practitioner (Family)

165 TOR CT
PITTSFIELD, MA 01201

Berkshire County (413) 447-2862

MS. GLENDA BOYKIN PA-C

Physician Assistant (Medical)

165 TOR CT, PAIN CENTER
PITTSFIELD, MA 01201

Berkshire County (413) 445-7246

MRS. BIJI MANOJ VENGALIL NP

Nurse Practitioner (Family)

165 TOR CT
PITTSFIELD, MA 01201

Berkshire County (413) 447-2701

MS. MICHELLE KIRSTEN NASH MS, RD, LDN

Dietitian, Registered

165 TOR CT
PITTSFIELD, MA 01201

Berkshire County (413) 997-5899

BERKSHIRE MEDICAL CENTER, INC.

Home Health

165 TOR CT
PITTSFIELD, MA 01201

Berkshire County (413) 447-2862

MS. MARTHANNE DONALDSON ANP

Nurse Practitioner (Adult Health)

165 TOR CT, HILLCREST CAMPUS OCCUPATIONAL HEALTH DEPT
PITTSFIELD, MA 01201

Berkshire County (413) 395-7809

SHIELDS PET CT AT BERKSHIRE MEDICAL CENTER LLC

Clinic/Center (Radiology, Mobile)

165 TOR CT
PITTSFIELD, MA 01201

Berkshire County (866) 258-4738

DR. ALEXANDER BELKIN MD

Internal Medicine (Hematology & Oncology)

165 TOR CT
PITTSFIELD, MA 01201

Berkshire County (413) 443-6000

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 Trevor Bayliss's NPI number?

The NPI number for Trevor Bayliss is 1982821906. It was assigned to this individual provider in the NPPES registry on April 19, 2007.

Where is Trevor Bayliss located?

Trevor Bayliss practices at 165 Tor Ct, Pittsfield, MA 01201. The listed phone number is (413) 443-6000.

What is Trevor Bayliss's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Trevor Bayliss enrolled in Medicare?

Yes. Trevor Bayliss 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 Trevor Bayliss's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Trevor Bayliss reassigns Medicare benefits to Berkshire Faculty Services Inc (Pittsfield, MA). 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 Trevor Bayliss's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Trevor Bayliss accept?

Health plans from Anthem Blue Cross and Blue Shield list Trevor Bayliss 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 Trevor Bayliss affiliated with any hospitals?

According to CMS data, Trevor Bayliss is affiliated with Berkshire Medical Center, Baystate Medical Center and Fairview Hospital.

When was this NPI record last updated?

The NPPES record for Trevor Bayliss was last updated on August 16, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.