Active NPI 1174508865 Individual Practitioner Male Practitioner

Dr. Alfred B Johnson , MD

Surgery • Merced, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Alfred Johnson, MD is a certified Surgery practicing in Merced, CA. With approximately 39 years of clinical experience since graduating from Georgetown University School Of Medicine in 1987, Dr. Johnson delivers high-quality medical care to the local community at 240 E 13TH ST STE C.

Dr. Johnson maintains professional affiliations with Yosemite Bone And Joint, Inc., Crescent Wound Care Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, new patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

240 E 13th St Ste C

Merced, CA 953416234

Telephone 2097232799

Fax 2097232984

Associated Practice Facility / Clinic

🏢 Yosemite Bone And Joint Inc Facility NPI 1710412010

Medicare Profile & Education

Medical School

Georgetown University School Of Medicine

Graduation Year

1987

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Merced, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

39 Yrs +9.6 yrs vs City Avg

City Avg: 29.4 Yrs

State Avg: 27.4 Yrs

Regional Practice Density

11 Specialists

Practicing in Merced, CA (3346 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

71.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Johnson (39 Years) 39 Yrs

Merced Specialty Average (29.4 Years) 29.4 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
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	29	15	$175.65	$57.79
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	12	11	$445.31	$119.17

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	95	58	$176.85	$57.69
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	39	38	$388.04	$112.16
99202 New patient office or other outpatient visit, typically 20 minutes	25	25	$220.03	$74.34
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	21	21	$495.29	$173.47
47562 Removal of gallbladder using an endoscope	17	17	$1934.11	$609.90
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	15	15	$386.35	$129.82
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	12	12	$4407.11	$1487.12
45378 Diagnostic exam of large bowel using a flexible endoscope	11	11	$537.16	$173.44

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	26	19	$174.11	$59.08
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	21	19	$497.68	$131.50
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	21	21	$314.00	$116.54
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	20	20	$4568.26	$1544.88
99213 Established patient office or other outpatient visit, typically 15 minutes	19	16	$242.72	$90.83
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	16	16	$604.23	$200.95
99202 New patient office or other outpatient visit, typically 20 minutes	14	14	$223.46	$76.15
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)	14	14	$213.75	$79.47
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	12	12	$400.55	$136.70
47562 Removal of gallbladder using an endoscope	11	11	$1713.65	$674.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	43	43	$317.98	$117.56
99213 Established patient office or other outpatient visit, typically 15 minutes	42	36	$219.95	$96.04
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	26	23	$135.38	$59.33
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	25	25	$1257.40	$126.80
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	19	19	$4722.91	$1568.18
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	18	18	$417.06	$139.44
47562 Removal of gallbladder using an endoscope	18	18	$1904.60	$658.92
99221 Initial hospital inpatient care per day, typically 30 minutes	12	12	$269.83	$103.00
99202 New patient office or other outpatient visit, typically 20 minutes	11	11	$236.00	$76.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	37	37	$339.00	$113.31
99213 Established patient office or other outpatient visit, typically 15 minutes	37	29	$229.00	$76.36
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	29	21	$139.00	$48.26
99221 Initial hospital inpatient care per day, typically 30 minutes	28	28	$314.00	$105.11
47562 Removal of gallbladder using an endoscope	22	22	$2052.49	$652.06
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	16	16	$1303.00	$137.40
99202 New patient office or other outpatient visit, typically 20 minutes	15	15	$236.00	$80.06
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	15	15	$4819.41	$1600.04

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	34	34	$339.00	$104.07
99202 New patient office or other outpatient visit, typically 20 minutes	29	29	$236.00	$78.04
99213 Established patient office or other outpatient visit, typically 15 minutes	27	25	$229.00	$77.40
99221 Initial hospital inpatient care per day, typically 30 minutes	23	22	$314.00	$103.01
47562 Removal of gallbladder using an endoscope	16	16	$2034.00	$669.45
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	14	14	$1303.00	$120.77
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	13	12	$139.00	$47.28
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	11	11	$4756.00	$1559.58

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99202 New patient office or other outpatient visit, typically 20 minutes	34	34	$236.00	$77.56
47562 Removal of gallbladder using an endoscope	20	20	$2034.00	$638.77
99201 New patient office or other outpatient visit, typically 10 minutes	12	12	$139.00	$46.11
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	12	11	$139.00	$45.53

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
47562 Removal of gallbladder using an endoscope	23	23	$2034.00	$625.05
99202 New patient office or other outpatient visit, typically 20 minutes	22	22	$236.00	$76.17
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	20	19	$629.00	$202.76
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$339.00	$103.69

Medical Specialties & State Licenses

CMS Verified: 2025-07-21

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License CA G88950

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Surgery

NUCC Taxonomy Code: 208600000X

State License NY 184876

Surgery

NUCC Taxonomy Code: 208600000X

State License GA 42860

Surgery

NUCC Taxonomy Code: 208600000X

State License MS 19035

Hospital & Practice Group Affiliations

Yosemite Bone And Joint, Inc.

1213 Coffee Rd, Modesto, CA 953554229

Phone: 2097232799

Crescent Wound Care Inc

1310 W Granger Ave, Modesto, CA 953503911

Phone: 8589673070

Secondary Practice Locations

1549 Golden Gate Ave

Dos Palos, CA 936202329

Phone: 2093920022

400 W I St

Los Banos, CA 936353459

Phone: 2098279999

311 W I St

Los Banos, CA 936353479

Phone: 2098262222

311 W I St # B

Los Banos, CA 936353479

Phone: 2098262222

Practice Associates & Co-Workers

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

1 Associated Practitioners

Dr. Abner Ward , MD

Orthopaedic Surgery

NPI 1063531291

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

14 Historical Events

📍

Updated Practice Location September 23, 2021

Registered at 240 E 13TH ST STE C, MERCED, CA 953416234 (Tel: 2097232799)

📍

Updated Business Mailing Address September 23, 2021

Registered at 240 E 13TH ST STE C, MERCED, CA 953416234 (Tel: 2097232799)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 23, 2021

Surgery (License #184876 in NY)

✅

NPI Profile Active June 27, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location June 27, 2017

Registered at 315 MERCY AVE, MERCED, CA 953408363 (Tel: 2095643700)

📍

Updated Business Mailing Address June 27, 2017

Registered at 3400 DATA DR, RANCHO CORDOVA, CA 956707956

👤

Provider Name / Credentials Updated June 27, 2017

Recorded as ALFRED JOHNSON, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 27, 2017

Surgery (License #184876 in NY)

✅

NPI Profile Active December 21, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location December 21, 2015

Registered at 16360 MONTEREY ST, #270, MORGAN HILL, CA 95037 (Tel: 4087785819)

📍

Updated Business Mailing Address December 21, 2015

Registered at P.O. BOX 2048, MORGAN HILL, CA 95038 (Tel: 4087785819)

👤

Provider Name / Credentials Updated December 21, 2015

Recorded as ALFRED JOHNSON, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 21, 2015

Surgery (License #19035 in MS)

🟢

Initial NPI Registration & Enumeration December 14, 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: 1174508865

Entity Type:

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

Enumeration Date: December 14, 2005

Last Update: July 21, 2025

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

240 E 13th St Ste C

Merced, CA 953416234

Phone: 2097232799

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.