Active NPI 1790725687 Individual Practitioner Female Practitioner

Melissa Marie Calliham , PA-C

Physician Assistant • Foothill Ranch, CA

Professional Overview & Biography Verified Profile Summary

Melissa Calliham, PA-C is a registered healthcare professional specializing in Physician Assistant in Foothill Ranch, CA. Practice services are available at 26672 PORTOLA PKWY STE 100 under active NPI credentials.

Frequently performed procedures and clinical services include emergency department visit with moderate level of medical decision making, emergency department visit for life threatening or functioning severity, emergency department visit with low level of medical decision making. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

26672 Portola Pkwy Ste 100

Foothill Ranch, CA 926101773

Telephone 9495570710

Associated Practice Facility / Clinic

🏢 California Emergency Physicians Medical Group Facility NPI 1891749719

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Foothill Ranch, CA

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 14.0 Yrs

State Avg: 11.5 Yrs

Regional Practice Density

5 Specialists

Practicing in Foothill Ranch, CA (14617 Statewide)

Telehealth Adoption Rate

40.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

88.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99284 Emergency department visit with moderate level of medical decision making	51	47	$974.41	$108.33
99285 Emergency department visit for life threatening or functioning severity	25	25	$1237.80	$156.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99284 Emergency department visit with moderate level of medical decision making	54	54	$1052.00	$105.96
99283 Emergency department visit with low level of medical decision making	20	19	$704.00	$62.92
99285 Emergency department visit for life threatening or functioning severity	19	18	$1229.00	$153.67

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99284 Emergency department visit with moderate level of medical decision making	72	71	$1052.00	$109.71
99283 Emergency department visit with low level of medical decision making	41	38	$704.00	$64.89
99285 Emergency department visit for life threatening or functioning severity	13	13	$1229.00	$158.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99284 Emergency department visit with moderate level of medical decision making	85	79	$1052.00	$111.07
99283 Emergency department visit with low level of medical decision making	47	37	$704.00	$65.43
99285 Emergency department visit for life threatening or functioning severity	44	44	$1229.00	$161.58
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	18	17	$53.00	$7.67

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99284 Emergency department visit with moderate level of medical decision making	65	64	$1052.00	$107.51
99285 Emergency department visit for life threatening or functioning severity	44	44	$1229.00	$155.66
99283 Emergency department visit with low level of medical decision making	31	27	$704.00	$58.65
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	20	19	$53.00	$7.80

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99283 Emergency department visit with low level of medical decision making	94	89	$670.81	$55.13
99284 Emergency department visit with moderate level of medical decision making	70	70	$1013.10	$104.50
99285 Emergency department visit for life threatening or functioning severity	19	19	$1203.74	$153.61

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99284 Emergency department visit with moderate level of medical decision making	67	67	$663.00	$100.61
99283 Emergency department visit with low level of medical decision making	54	50	$444.00	$53.10
99285 Emergency department visit for life threatening or functioning severity	33	33	$989.00	$148.05
12001 Repair of wound (2.5 centimeters or less) of the scalp, neck, underarms, trunk, arms and/or legs	13	13	$452.00	$38.66

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99284 Emergency department visit with moderate level of medical decision making	87	84	$663.00	$102.61
99283 Emergency department visit with low level of medical decision making	77	76	$444.00	$54.15
99285 Emergency department visit for life threatening or functioning severity	24	24	$989.00	$151.07
12001 Repair of wound (2.5 centimeters or less) of the scalp, neck, underarms, trunk, arms and/or legs	12	12	$452.00	$39.70

Medical Specialties & State Licenses

CMS Verified: 2026-05-29

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License CA PA18137

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Secondary Practice Locations

1 Hoag Dr

Newport Beach, CA 926634162

Phone: 9497648372

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

1 Associated Practitioners

Nancy Dinh , PA

Physician Assistant - Medical

NPI 1932721651

Physician Assistant

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

9 Historical Events

📍

Updated Practice Location May 29, 2026

Registered at 26672 PORTOLA PKWY STE 100, FOOTHILL RANCH, CA 926101773 (Tel: 9495570710)

📍

Updated Practice Location June 14, 2024

Registered at 1 HOAG DR, NEWPORT BEACH, CA 926634162 (Tel: 9497648372)

👤

Provider Name / Credentials Updated June 14, 2024

Recorded as MELISSA CALLIHAM, P.A-C

✅

NPI Profile Active December 02, 2013

NPI status registered as active in NPPES database

📍

Updated Practice Location December 02, 2013

Registered at 400 N. PEPPER AVENUE, COLTON, CA 923241819 (Tel: 9095801400)

📍

Updated Business Mailing Address December 02, 2013

Registered at 2100 POWELL STREET, STE 920, EMERYVILLE, CA 946081803 (Tel: 5103502600)

👤

Provider Name / Credentials Updated December 02, 2013

Recorded as MELISSA BIELINSKI, P.A-C

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 02, 2013

Physician Assistant (License #PA18137 in CA)

🟢

Initial NPI Registration & Enumeration June 08, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1790725687

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: June 08, 2006

Last Update: May 29, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2100 Powell Street, Ste 920

Emeryville, CA 946081803

Phone: 5103502600

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.