Active NPI 1386668366 Individual Practitioner Male Practitioner

Dr. Johnathan David Maskin , MD

Anesthesiology • Pasadena, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Johnathan Maskin, MD is a certified Anesthesiology practicing in Pasadena, CA. With approximately 46 years of clinical experience since completing medical education in 1980, Dr. Maskin delivers high-quality medical care to the local community at 100 W CALIFORNIA BLVD.

Dr. Maskin is affiliated with Pacific Valley Medical Group and accepts Medicare assignment.

Frequently performed procedures and clinical services include insertion of artery tube for blood sampling or infusion through skin, ultrasonic guidance for blood vessel access, subsequent hospital care with moderate levelof medical decision making, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

100 W California Blvd

Pasadena, CA 911053010

Telephone 6263975000

Fax 6263972912

Associated Practice Facility / Clinic

🏢 The Hill Medical Corporation Facility NPI 1154310415

Medicare Profile & Education

Medical School

Other

Graduation Year

1980

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiology in Pasadena, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

46 Yrs +22.7 yrs vs City Avg

City Avg: 23.3 Yrs

State Avg: 27.4 Yrs

Regional Practice Density

65 Specialists

Practicing in Pasadena, CA (7879 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

92.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Maskin (46 Years) 46 Yrs

Pasadena Specialty Average (23.3 Years) 23.3 Yrs

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
36620 Insertion of artery tube for blood sampling or infusion through skin	28	28	$553.32	$44.30
76937 Ultrasonic guidance for blood vessel access	18	16	$183.11	$14.03

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	46	14	$524.00	$83.20
36620 Insertion of artery tube for blood sampling or infusion through skin	35	35	$561.49	$45.56
00560 Anesthesia for procedure on heart and large blood vessels	13	13	$4017.80	$481.46
76937 Ultrasonic guidance for blood vessel access	12	11	$188.75	$14.58

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36620 Insertion of artery tube for blood sampling or infusion through skin	31	31	$529.94	$46.41
76937 Ultrasonic guidance for blood vessel access	22	21	$183.91	$14.54
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	16	16	$357.88	$32.71
93503 Insertion of tube in pulmonary artery for monitoring	11	11	$1777.05	$92.76

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36620 Insertion of artery tube for blood sampling or infusion through skin	48	48	$511.41	$47.15
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	41	41	$341.00	$33.35
99231 Follow-up hospital inpatient care per day, typically 15 minutes	28	15	$200.00	$41.00
93503 Insertion of tube in pulmonary artery for monitoring	25	25	$1688.52	$93.21
64420 Injection of anesthetic agent and/or steroid into rib nerve	21	20	$1506.43	$86.05
76937 Ultrasonic guidance for blood vessel access	21	20	$174.95	$14.78
64421 Injection of anesthetic agent and/or steroid into multiple rib nerves for regional nerve block	15	11	$1363.00	$27.88
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	14	14	$1195.00	$54.92
00567 Anesthesia for heart artery bypass grafting on heart-lung machine	13	13	$6685.92	$904.73
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	11	11	$1211.23	$158.89
00560 Anesthesia for procedure on heart and large blood vessels	11	11	$4882.09	$650.18

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	56	38	$200.00	$41.31
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	27	27	$331.00	$34.53
36620 Insertion of artery tube for blood sampling or infusion through skin	22	22	$499.23	$48.13
64420 Injection of anesthetic agent and/or steroid into rib nerve	20	16	$1203.50	$73.60
76937 Ultrasonic guidance for blood vessel access	14	11	$168.00	$15.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	106	63	$200.00	$41.83
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	17	17	$315.00	$34.41
36620 Insertion of artery tube for blood sampling or infusion through skin	14	14	$475.00	$47.48
76937 Ultrasonic guidance for blood vessel access	11	11	$160.00	$15.40

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	118	65	$200.00	$41.73
01996 Daily hospital management of continuous spinal drug administration	30	12	$441.67	$68.46
36620 Insertion of artery tube for blood sampling or infusion through skin	17	17	$472.59	$45.33
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	12	12	$1163.75	$177.04
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	11	11	$300.00	$34.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	107	55	$200.00	$40.93
36620 Insertion of artery tube for blood sampling or infusion through skin	24	24	$331.25	$53.60
76937 Ultrasonic guidance for blood vessel access	14	14	$111.43	$15.13

Medical Specialties & State Licenses

Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

State License CA A41837

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

00A418370 (CA)

Commercial Insurance / Payer ID Blue Shield

00A418370 (CA)

Hospital & Practice Group Affiliations

Pacific Valley Medical Group

100 W California Blvd, Pasadena, CA 911053010

Phone: 6264409161

Pacific Valley Medical Group

333 S Arroyo Pkwy, Pasadena, CA 911052515

Phone: 6264409161

Practice Associates & Co-Workers

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

40 Associated Practitioners

Dr. Paul Lee , MD

Internal Medicine

NPI 1023561172

Doctor of Medicine (M.D.)

Camille Medina

Nurse Practitioner - Psychiatric/Mental Health

NPI 1033901582

Dr. Johnathan Chou , MD

Student in an Organized Health Care Education/Training Program

NPI 1043621691

Doctor of Medicine (M.D.)

Dr. Jonwei Hwang , MD

Student in an Organized Health Care Education/Training Program

NPI 1053044271

Doctor of Medicine (M.D.)

Jeffrey Robeff , RN

Registered Nurse - Psychiatric/Mental Health, Adult

NPI 1053965087

Registered Nurse

Dr. Chelsea Lam , MD

Student in an Organized Health Care Education/Training Program

NPI 1073121786

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active February 14, 2008

NPI status registered as active in NPPES database

📍

Updated Practice Location February 14, 2008

Registered at 100 W CALIFORNIA BLVD, PASADENA, CA 911053010 (Tel: 6263975000)

📍

Updated Business Mailing Address February 14, 2008

Registered at 225 S LAKE AVE, 535, PASADENA, CA 911013005 (Tel: 6267956597)

👤

Provider Name / Credentials Updated February 14, 2008

Recorded as JOHNATHAN MASKIN, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 14, 2008

Anesthesiology (License #A41837 in CA)

🟢

Initial NPI Registration & Enumeration July 26, 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: 1386668366

Entity Type:

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

Enumeration Date: July 26, 2006

Last Update: February 14, 2008

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

225 S Lake Ave, 535

Pasadena, CA 911013005

Phone: 6267956597

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.