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DR. DANIEL T LYMAN D.O.
NPI 1235543943
Internal Medicine - Critical Care Medicine in Chandler, AZ

Active since June 20, 2014PECOS EnrolledAccepts Medicare Assignment
1955 W FRYE RD, CHANDLER, AZ 85224(480) 728-3000(602) 230-6461 Get Directions Write a Review

NPPES record last updated: April 7, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 7, 2026, Nov 11, 2024, Mar 10, 2022 and 1 more (4 updates tracked since 2019).

About Dr. Daniel T Lyman D.o. NPPES

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

DR. DANIEL T LYMAN D.O. (NPI 1235543943) is an individual critical care medicine provider in Chandler, Arizona, licensed in Arizona (008799) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, is affiliated with Holy Cross Hospital-jordan Valley, and maintains a secondary practice location in Gilbert.

NPPES Registry Identity

NPI1235543943
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameDR. DANIEL T LYMANCredential: D.O.
Location Address1955 W FRYE RDChandler, AZ 85224-6282
Mailing AddressPo Box 33269Phoenix, AZ 85067-3269 · (602) 406-4786 · Fax (916) 636-4358
Phone(480) 728-3000
Fax(602) 230-6461
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateJune 20, 2014
Last NPPES UpdateApril 7, 20264 updates tracked since enumeration
NPPES CertifiedApril 7, 2026
✔ NPI 1235543943 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in AZ · 008799
Definition
An internist who 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 ListedEmergency MedicineTaxonomy 207P00000X · License 008799 (AZ)
1955 W FRYE RD, Chandler, AZ 85224
Open in Google Maps ↗

Secondary Practice Location 1

Location 13555 S Val Vista DrGilbert, AZ 85297-7323 · Phone (480) 909-3870 · Fax (480) 728-9616

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. Daniel T Lyman D.o. 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 ID749550911
PECOS Enrollment IDI20200224002833, I20250907000299
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 Reassignments

5

Medicare enrollment records show Daniel Lyman reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cep America - Intensivists PC
Same address
Critical Care Medicine
1955 W FRYE RD
Chandler, AZ 85224
  • Reassigned Medicare billing, Arizona enrollment
  • 22 clinicians in this Medicare group
NPI 1225902109 (480) 728-3000
Arizona Acute Medical Services 1 PC
16 mi
Hospitalist
1930 E THOMAS RD
Phoenix, AZ 85016
  • Reassigned Medicare billing, Arizona enrollment
  • 302 clinicians in this Medicare group
NPI 1154860674 (602) 532-1000
Emergency Group Of Arizona Professional Corporation
20 mi
Emergency Medicine
2000 W BETHANY HOME RD
Phoenix, AZ 85015
  • Reassigned Medicare billing, Arizona enrollment
  • 260 clinicians in this Medicare group
NPI 1215275433 (925) 924-1600
Faculty Physicians And Surgeons Of Llusm
252 mi
Pediatrics
82934 CIVIC CENTER DR
Indio, CA 92201
  • Reassigned Medicare billing, California enrollment
  • 2,584 clinicians in this Medicare group
NPI 1710487962 (760) 477-0733
Catholic Health Initiatives Colorado
487 mi
Foot and Ankle Surgery
3943 E PONY EXPRESS PKWY STE 110
Eagle Mountain, UT 84005
  • Reassigned Medicare billing, Utah enrollment
  • 136 clinicians in this Medicare group
NPI 1255033205 (385) 334-3668

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.

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.
169 services93 patients

Hospital Affiliations CMS Care Compare

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

Holy Cross Hospital-Jordan Valley

Acute Care Hospitals · West Jordan, UT
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number460051
Location3580 West 9000 SouthWest Jordan, UT 84088 · Salt Lake County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85224 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
$127.71 typical visit price
range $55.44 – $168.60
Typical copayment $31.92 (range $13.86 – $42.15)
Most-billed visit code 99204
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
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.

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.

HANNAH ELIZABETH ALLEN CNIM
Specialist/Technologist, Other (Electroneurodiagnostic)
1955 W FRYE RD
CHANDLER, AZ 85224
Maricopa County (480) 963-4561
REBECCA ROBERTS
Emergency Medicine
1955 W FRYE RD
CHANDLER, AZ 85224
Maricopa County (480) 728-3000
DR. KHOA DANG LE M. D.
Anesthesiology
1955 W FRYE RD
CHANDLER, AZ 85224
Maricopa County (480) 728-8000
NATALIE VAN WAGONER GNEITING DO
Student in an Organized Health Care Education/Training Program
1955 W FRYE RD
CHANDLER, AZ 85224
Maricopa County (480) 728-3000
DR. FERNANDO RESENDEZ RIVERA MD
Student in an Organized Health Care Education/Training Program
1955 W FRYE RD
CHANDLER, AZ 85224
Maricopa County (480) 728-3000
MINLI HUANG APRN
Family Medicine
1955 W FRYE RD
CHANDLER, AZ 85224
Maricopa County (480) 728-3000
MICHELLE ANN RAMOS RN
Registered Nurse (General Practice)
1955 W FRYE RD
CHANDLER, AZ 85224
Maricopa County (480) 728-3000
MS. JAUNA ELIZABETH MAZZOCCO
Registered Nurse (Critical Care Medicine)
1955 W FRYE RD
CHANDLER, AZ 85224
Maricopa County (480) 728-3000

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 Daniel Lyman's NPI number?

The NPI number for Daniel Lyman is 1235543943. It was assigned to this individual provider in the NPPES registry on June 20, 2014.

Where is Daniel Lyman located?

Daniel Lyman practices at 1955 W Frye Rd, Chandler, AZ 85224. The listed phone number is (480) 728-3000.

What is Daniel Lyman's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Daniel Lyman enrolled in Medicare?

Yes. Daniel Lyman 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 Daniel Lyman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Daniel Lyman reassigns Medicare benefits to 5 organizations: Cep America - Intensivists PC (Chandler, AZ), Arizona Acute Medical Services 1 PC (Phoenix, AZ), Emergency Group Of Arizona Professional Corporation (Phoenix, AZ), Faculty Physicians And Surgeons Of Llusm (Indio, CA) and Catholic Health Initiatives Colorado (Eagle Mountain, UT). 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 Daniel Lyman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Daniel Lyman affiliated with any hospitals?

According to CMS data, Daniel Lyman is affiliated with Holy Cross Hospital-Jordan Valley.

When was this NPI record last updated?

The NPPES record for Daniel Lyman was last updated on April 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.