Active NPI 1326028663 Individual Practitioner Male Practitioner

Dr. Allen J Hamaker , MD

Internal Medicine • Okc, OK

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Allen Hamaker, MD is a certified Internal Medicine practicing in Okc, OK. With approximately 36 years of clinical experience since graduating from Wayne State University School Of Medicine in 1990, Dr. Hamaker delivers high-quality medical care to the local community at 3613 NW 56TH ST..

Dr. Hamaker accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, insertion of needle into vein for collection of blood sample, visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

3613 Nw 56th St.
Suite 140

Okc, OK 73112

Telephone 4059496481

Fax 4057955908

Associated Practice Facility / Clinic

🏢 Archana P Barve, Md Pc Facility NPI 1780620351

Medicare Profile & Education

Medical School

Wayne State University School Of Medicine

Graduation Year

1990

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Okc, OK

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

36 Yrs Matches City Avg

City Avg: 36.0 Yrs

State Avg: 26.0 Yrs

Regional Practice Density

2 Specialists

Practicing in Okc, OK (1179 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

42.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Hamaker (36 Years) 36 Yrs

Okc 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
99213 Established patient office or other outpatient visit, typically 15 minutes	516	147	$172.97	$84.01
36415 Insertion of needle into vein for collection of blood sample	247	115	$15.00	$8.65
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	244	119	$32.17	$15.43
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	98	98	$200.00	$119.73
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	76	26	$150.00	$73.44
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	68	20	$49.49	$13.12
G0008 Administration of influenza virus vaccine	46	45	$75.00	$30.07
90653 Vaccine for influenza for injection into muscle	42	42	$100.00	$81.82
87811 Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19)	19	16	$75.00	$40.55
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	17	14	$100.00	$51.86
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	16	$175.00	$118.48
99238 Hospital discharge day management, 30 minutes or less	16	14	$102.00	$75.16

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	508	139	$149.45	$83.57
36415 Insertion of needle into vein for collection of blood sample	251	120	$15.00	$8.40
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	86	86	$200.00	$119.90
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	73	17	$148.08	$74.85
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	68	20	$50.00	$13.05
G0008 Administration of influenza virus vaccine	61	61	$74.59	$28.68
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	59	59	$100.00	$75.81
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	29	25	$175.00	$118.97
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	19	17	$100.00	$52.16
93000 Routine ekg using at least 12 leads including interpretation and report	16	12	$43.08	$13.30
G0009 Administration of pneumococcal vaccine	13	13	$26.92	$24.82

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	438	125	$148.63	$85.19
36415 Insertion of needle into vein for collection of blood sample	222	113	$15.00	$2.96
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	89	27	$150.00	$67.43
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	89	89	$200.00	$122.64
G0008 Administration of influenza virus vaccine	69	69	$74.64	$27.14
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	69	69	$100.00	$70.25
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	65	13	$50.00	$13.34
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	41	29	$173.78	$120.58
87811 Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19)	34	27	$66.91	$41.10
81002 Urinalysis, manual test	21	16	$8.10	$3.45
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	21	17	$200.00	$127.97
99238 Hospital discharge day management, 30 minutes or less	18	15	$102.00	$67.74
G0009 Administration of pneumococcal vaccine	14	14	$29.64	$25.27
90471 Administration of 1 vaccine	13	13	$45.00	$15.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	443	128	$124.94	$86.52
36415 Insertion of needle into vein for collection of blood sample	196	98	$15.00	$3.00
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	100	44	$101.00	$68.75
G0008 Administration of influenza virus vaccine	80	80	$49.35	$15.57
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	79	79	$200.00	$125.26
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	77	77	$100.00	$66.43
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	58	17	$75.00	$38.31
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	52	17	$48.08	$13.28
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	31	21	$125.00	$123.07
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	24	18	$60.00	$52.84
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	20	18	$177.50	$130.00
81002 Urinalysis, manual test	15	14	$9.00	$3.48
99238 Hospital discharge day management, 30 minutes or less	13	12	$102.00	$68.64
93000 Routine ekg using at least 12 leads including interpretation and report	12	11	$36.21	$13.86
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$158.00	$106.34

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	411	128	$109.61	$69.53
36415 Insertion of needle into vein for collection of blood sample	155	87	$15.00	$2.98
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	127	44	$101.00	$70.60
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	79	79	$100.00	$61.00
G0008 Administration of influenza virus vaccine	78	78	$25.51	$15.78
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	69	69	$200.00	$109.49
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	41	13	$25.00	$13.48
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	37	16	$73.06	$38.48
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	29	23	$125.00	$103.83
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	23	20	$60.00	$36.68
99238 Hospital discharge day management, 30 minutes or less	20	18	$102.00	$70.80
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	20	18	$175.00	$130.82
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	16	14	$82.04	$50.35
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	14	13	$100.00	$45.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	508	127	$100.00	$70.19
36415 Insertion of needle into vein for collection of blood sample	191	100	$15.00	$2.94
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	180	59	$101.00	$70.51
G0008 Administration of influenza virus vaccine	77	76	$25.00	$15.46
90653 Vaccine for influenza for injection into muscle	74	73	$100.00	$58.28
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	70	70	$200.00	$162.30
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	53	23	$25.00	$15.58
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	48	27	$125.00	$103.10
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	46	13	$30.35	$18.79
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	42	18	$48.81	$38.00
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	22	19	$60.00	$42.24
99238 Hospital discharge day management, 30 minutes or less	22	14	$102.00	$70.37
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	22	22	$200.00	$109.40
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	21	15	$175.00	$132.70
J1040 Injection, methylprednisolone acetate, 80 mg	18	12	$20.00	$12.35
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	15	12	$76.88	$50.00
G0009 Administration of pneumococcal vaccine	13	13	$25.00	$15.46

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	506	134	$100.00	$65.20
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	222	70	$101.00	$66.64
G0008 Administration of influenza virus vaccine	82	80	$25.00	$18.90
36415 Insertion of needle into vein for collection of blood sample	79	40	$15.00	$2.94
90653 Vaccine for influenza for injection into muscle	73	73	$100.00	$53.58
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	55	21	$26.77	$17.45
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	47	21	$25.00	$17.96
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	42	31	$58.51	$38.70
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	33	29	$175.00	$125.30
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	33	16	$47.23	$36.98
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	32	19	$125.00	$96.69
99238 Hospital discharge day management, 30 minutes or less	29	25	$102.00	$66.46
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	23	23	$200.00	$153.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	435	130	$100.00	$64.15
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	103	45	$101.00	$64.91
G0008 Administration of influenza virus vaccine	68	68	$25.00	$23.05
90662 Influenza vaccine split virus, preservative free	67	67	$99.63	$48.05
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	62	42	$51.96	$36.40
36415 Insertion of needle into vein for collection of blood sample	57	43	$15.00	$2.94
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	56	30	$125.00	$94.88
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	48	14	$28.04	$16.83
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	41	19	$25.00	$21.77
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	36	12	$47.51	$36.05
G0009 Administration of pneumococcal vaccine	26	26	$25.00	$23.05
90670 Pneumococcal vaccine for injection into muscle	25	25	$200.00	$182.43
99238 Hospital discharge day management, 30 minutes or less	19	19	$102.00	$64.76
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	11	11	$175.00	$123.28

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License OK 20735

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

100060090A (OK)

Practice Associates & Co-Workers

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

2 Associated Practitioners

Julie Castle , PA

Physician Assistant

NPI 1558424853

Physician Assistant

Dr. Archana Barve , MD

Physical Medicine & Rehabilitation

NPI 1891765079

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 October 14, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location October 14, 2014

Registered at 3613 NW 56TH ST., SUITE 140, OKC, OK 73112 (Tel: 4059496481)

📍

Updated Business Mailing Address October 14, 2014

Registered at 3613 NW 56TH ST., SUITE 140, OKC, OK 73112 (Tel: 4059496481)

👤

Provider Name / Credentials Updated October 14, 2014

Recorded as ALLEN HAMAKER, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 14, 2014

Internal Medicine (License #20735 in OK)

🟢

Initial NPI Registration & Enumeration January 20, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1326028663

Entity Type:

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

Enumeration Date: January 20, 2006

Last Update: October 14, 2014

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

3613 Nw 56th St., Suite 140

Okc, OK 73112

Phone: 4059496481

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.