Active NPI 1356347959 Individual Practitioner Male Practitioner

Dr. Daniel R Lemay , MD, PhD

Neurological Surgery • Downey, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Daniel Lemay, MD, PhD is a certified Neurological Surgery practicing in Downey, CA. With approximately 36 years of clinical experience since graduating from University Of Michigan Medical School in 1990, Dr. Lemay delivers high-quality medical care to the local community at 8043 2ND ST.

Dr. Lemay is affiliated with Daniel R. Lemay Md Phd Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, follow-up hospital inpatient care per day, initial hospital care with straightforward or low-level 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

8043 2nd St
Ste 105

Downey, CA 902413621

Telephone 5628621134

Fax 5628619895

Associated Practice Facility / Clinic

🏢 Daniel R. Lemay, Md, Phd, Inc Facility NPI 1669511408

Medicare Profile & Education

Medical School

University Of Michigan Medical School

Graduation Year

1990

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Neurological Surgery in Downey, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

36 Yrs Matches City Avg

City Avg: 36.0 Yrs

State Avg: 26.2 Yrs

Regional Practice Density

4 Specialists

Practicing in Downey, CA (999 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

35.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Lemay (36 Years) 36 Yrs

Downey Specialty Average (36.0 Years) 36.0 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	68	53	$204.00	$138.48
99231 Follow-up hospital inpatient care per day, typically 15 minutes	49	25	$80.00	$51.01
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	30	30	$212.00	$134.56
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	28	28	$263.00	$179.06
99213 Established patient office or other outpatient visit, typically 15 minutes	28	28	$144.00	$98.52
99285 Emergency department visit for life threatening or functioning severity	22	22	$276.00	$176.26
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	14	14	$312.00	$178.86
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$173.00	$120.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	104	36	$70.96	$51.88
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	68	50	$204.00	$138.87
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	46	46	$263.00	$179.76
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	45	44	$212.00	$136.61
99213 Established patient office or other outpatient visit, typically 15 minutes	37	33	$144.00	$98.38
99285 Emergency department visit for life threatening or functioning severity	21	20	$272.67	$180.88
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	16	16	$312.00	$182.37
63047 Partial removal of middle spine bone with release of spinal cord and/or nerves	13	13	$2076.00	$1125.93

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	101	42	$60.00	$40.80
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	53	44	$204.00	$140.67
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	37	37	$263.00	$182.98
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	33	33	$212.00	$142.84
99285 Emergency department visit for life threatening or functioning severity	28	28	$262.00	$184.65
99213 Established patient office or other outpatient visit, typically 15 minutes	28	27	$144.00	$99.95
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	14	14	$312.00	$209.42

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	61	25	$60.00	$41.00
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	56	47	$193.98	$142.32
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	29	29	$263.00	$183.48
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	24	23	$212.00	$145.27
99285 Emergency department visit for life threatening or functioning severity	21	21	$262.00	$188.38
99213 Established patient office or other outpatient visit, typically 15 minutes	20	19	$137.00	$101.43
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	20	20	$312.00	$214.15

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	55	28	$60.00	$42.53
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	47	39	$171.00	$120.98
99285 Emergency department visit for life threatening or functioning severity	41	40	$262.00	$183.36
99213 Established patient office or other outpatient visit, typically 15 minutes	39	34	$116.00	$83.69
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	35	35	$263.00	$180.96
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	24	24	$312.00	$219.10
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	24	24	$212.00	$149.13
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	18	16	$110.00	$78.24

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	43	36	$171.00	$117.10
99213 Established patient office or other outpatient visit, typically 15 minutes	43	38	$116.00	$81.77
99231 Follow-up hospital inpatient care per day, typically 15 minutes	43	23	$60.00	$41.83
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	30	30	$312.00	$215.48
99285 Emergency department visit for life threatening or functioning severity	27	27	$262.00	$180.72
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	21	20	$212.00	$145.57
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	12	12	$263.00	$178.81

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	72	56	$171.00	$118.73
99231 Follow-up hospital inpatient care per day, typically 15 minutes	38	26	$60.00	$42.58
99285 Emergency department visit for life threatening or functioning severity	37	37	$262.00	$184.29
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	23	23	$312.00	$221.04
99213 Established patient office or other outpatient visit, typically 15 minutes	23	22	$116.00	$81.77
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$212.00	$148.15
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	17	15	$229.00	$161.62
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$263.00	$180.99
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	12	12	$325.00	$228.44

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	70	58	$171.00	$117.41
99213 Established patient office or other outpatient visit, typically 15 minutes	48	41	$116.00	$80.07
99231 Follow-up hospital inpatient care per day, typically 15 minutes	39	24	$60.00	$41.79
99285 Emergency department visit for life threatening or functioning severity	37	37	$262.00	$176.47
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	28	27	$212.00	$146.03
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	25	25	$312.00	$216.37
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	22	22	$263.00	$177.94
63048 Partial removal of spine bone with release of spinal cord and/or nerves	19	12	$420.00	$226.94
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	13	13	$110.00	$77.08
63047 Partial removal of middle spine bone with release of spinal cord and/or nerves	13	13	$2076.00	$1058.34

Medical Specialties & State Licenses

Neurological Surgery Primary Specialty

NUCC Taxonomy Code: 207T00000X

State License CA G74285

A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

00G742851 (CA)

Hospital & Practice Group Affiliations

Daniel R. Lemay Md Phd Inc

8043 2nd St, Downey, CA 902413692

Phone: 5628621134

Practice Associates & Co-Workers

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

6 Associated Practitioners

Tanya Steward , FNP-C

Nurse Practitioner - Family

NPI 1396375275

Family Nurse Practitioner (Certified)

Dr. Mohammad Raffat Jaber , MD

Surgery - Vascular Surgery

NPI 1407980410

Doctor of Medicine (M.D.)

Dr. Khalifa Mansour , MD

Psychiatry & Neurology - Neurology

NPI 1538166418

Doctor of Medicine (M.D.)

Dr. Harley Deere , MD

Neurological Surgery

NPI 1588661524

Doctor of Medicine (M.D.)

Dr. Duc Duong , MD

Neurological Surgery

NPI 1598761181

Doctor of Medicine (M.D.)

Lisa Johnson , MSN, NP-C

Nurse Practitioner

NPI 1750388716

Master of Science in Nursing, Nurse Practitioner (Certified)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active June 09, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location June 09, 2014

Registered at 8043 2ND ST, STE 105, DOWNEY, CA 902413621 (Tel: 5628621134)

📍

Updated Business Mailing Address June 09, 2014

Registered at 8043 2ND ST, STE 105, DOWNEY, CA 902413621 (Tel: 5628621134)

👤

Provider Name / Credentials Updated June 09, 2014

Recorded as DANIEL LEMAY, MD, PH. D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 09, 2014

Neurological Surgery (License #G74285 in CA)

🟢

Initial NPI Registration & Enumeration June 28, 2005

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: 1356347959

Entity Type:

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

Enumeration Date: June 28, 2005

Last Update: June 09, 2014

Sole Proprietor: No

Update or Correct Profile

Mailing Address

8043 2nd St, Ste 105

Downey, CA 902413621

Phone: 5628621134

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.