Active NPI 1679857239 Individual Practitioner Male Practitioner

Benjamin Williams Diffenderfer , PA-C

Physician Assistant • Bel Air, MD

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Benjamin Diffenderfer, PA-C is a certified Physician Assistant practicing in Bel Air, MD. With approximately 15 years of clinical experience since completing medical education in 2011, Benjamin Diffenderfer delivers high-quality medical care to the local community at 510 UPPER CHESAPEAKE DR., SUITE 417.

Benjamin Diffenderfer maintains professional affiliations with Agape Physical Therapy And Sports Rehabilitation Lp, Upper Chesapeake Orthopedics, Llc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include injection, denosumab, 1 mg, injection, romosozumab-aqqg, 1 mg, established 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

510 Upper Chesapeake Dr., Suite 417
Physicians Pavillion Ii

Bel Air, MD 21014

Telephone 4436433130

Fax 4436433155

Associated Practice Facility / Clinic

🏢 Upper Chesapeake Surgical Associates, Llc Facility NPI 1629175997

Medicare Profile & Education

Medical School

Other

Graduation Year

2011

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Bel Air, MD

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

15 Yrs +3.3 yrs vs City Avg

City Avg: 11.7 Yrs

State Avg: 11.8 Yrs

Regional Practice Density

58 Specialists

Practicing in Bel Air, MD (3255 Statewide)

Telehealth Adoption Rate

13.8% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

71.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Diffenderfer (15 Years) 15 Yrs

Bel Air Specialty Average (11.7 Years) 11.7 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
J0897 Injection, denosumab, 1 mg	12,180	135	$76.00	$25.70
J3111 Injection, romosozumab-aqqg, 1 mg	11,340	12	$33.00	$10.72
99213 Established patient office or other outpatient visit, typically 15 minutes	405	261	$283.00	$80.07
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	260	143	$45.00	$12.67
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	67	67	$350.00	$96.66
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	57	55	$171.95	$48.57
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	51	50	$400.00	$113.20
27447 Replacement of knee joint, both sides of knee	38	37	$654.52	$184.37
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	34	34	$689.00	$195.25
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	28	28	$523.00	$148.00
20610 Aspiration and/or injection of fluid from large joint	22	15	$277.57	$78.19
27130 Replacement of thigh bone and hip joint with prosthesis	16	16	$681.89	$187.17
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	11	11	$563.00	$159.57
99221 Initial hospital inpatient care per day, typically 30 minutes	11	11	$256.00	$72.24

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J3111 Injection, romosozumab-aqqg, 1 mg	28,980	26	$30.00	$9.96
J0897 Injection, denosumab, 1 mg	10,380	111	$70.00	$23.29
99213 Established patient office or other outpatient visit, typically 15 minutes	467	273	$283.32	$80.68
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	312	131	$45.00	$12.71
J0702 Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg	74	14	$21.00	$6.69
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	58	58	$522.00	$149.50
20610 Aspiration and/or injection of fluid from large joint	47	27	$245.45	$70.12
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	41	41	$353.00	$100.97
27447 Replacement of knee joint, both sides of knee	35	35	$660.69	$188.00
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	28	27	$400.00	$114.52
73562 X-ray of knee, 3 views	20	13	$131.00	$37.48
29823 Removal of extensive shoulder joint tissue using an endoscope	18	17	$289.08	$44.76
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	16	16	$560.00	$159.87
99441 Telephone medical discussion with physician, 5-10 minutes	16	16	$176.00	$48.99
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	14	14	$404.00	$115.50
20610 Aspiration and/or injection of fluid from large joint	12	12	$156.46	$42.32
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	11	11	$166.64	$47.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J3111 Injection, romosozumab-aqqg, 1 mg	24,570	23	$28.00	$9.46
J0897 Injection, denosumab, 1 mg	6,780	73	$64.00	$21.65
J7318 Hyaluronan or derivative, durolane, for intra-articular injection, 1 mg	1,980	17	$22.00	$14.64
99213 Established patient office or other outpatient visit, typically 15 minutes	322	177	$295.25	$83.82
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	229	94	$47.00	$13.29
J0702 Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg	180	28	$21.00	$6.65
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	94	94	$545.00	$154.76
20610 Aspiration and/or injection of fluid from large joint	77	45	$259.48	$72.62
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	49	47	$416.00	$118.39
27447 Replacement of knee joint, both sides of knee	40	37	$814.45	$186.22
73562 X-ray of knee, 3 views	30	22	$138.00	$39.26
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$367.00	$104.52
99231 Follow-up hospital inpatient care per day, typically 15 minutes	24	16	$124.00	$35.12
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	21	21	$587.00	$167.24
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	19	19	$47.00	$13.25
27130 Replacement of thigh bone and hip joint with prosthesis	17	17	$694.71	$195.84
73030 X-ray of shoulder, minimum of 2 views	16	14	$111.56	$31.52
27245 Treatment of broken neck of thigh bone with bone implant	14	14	$615.44	$180.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	4,144	46	$59.84	$20.63
J7318 Hyaluronan or derivative, durolane, for intra-articular injection, 1 mg	1,860	18	$22.00	$17.23
J0702 Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg	250	50	$21.78	$6.99
99213 Established patient office or other outpatient visit, typically 15 minutes	190	134	$290.41	$84.35
20610 Aspiration and/or injection of fluid from large joint	122	74	$250.69	$71.53
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	72	47	$51.39	$13.08
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	47	47	$346.45	$103.92
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	43	43	$536.56	$154.91
J7323 Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose	39	14	$402.54	$133.96
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	38	37	$412.79	$119.54
73562 X-ray of knee, 3 views	30	21	$133.33	$38.20
73560 X-ray of knee, 1-2 views	23	16	$105.87	$32.37
73565 X-ray of both knees while standing	22	22	$129.05	$38.56
73030 X-ray of shoulder, minimum of 2 views	22	20	$112.09	$32.35
99441 Telephone medical discussion with physician, 5-10 minutes	21	17	$184.00	$52.00
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	20	19	$577.10	$166.75
27447 Replacement of knee joint, both sides of knee	18	18	$691.00	$207.46
27130 Replacement of thigh bone and hip joint with prosthesis	17	17	$682.44	$196.43
73502 X-ray of hip, 2-3 views	17	17	$148.41	$44.00
27245 Treatment of broken neck of thigh bone with bone implant	16	16	$625.22	$186.39
29823 Removal of extensive shoulder joint tissue using an endoscope	14	14	$309.66	$45.34

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	3,254	41	$35.15	$19.65
J7318 Hyaluronan or derivative, durolane, for intra-articular injection, 1 mg	994	13	$22.00	$17.23
J0702 Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg	233	55	$13.45	$7.02
99213 Established patient office or other outpatient visit, typically 15 minutes	190	127	$161.73	$69.78
20610 Aspiration and/or injection of fluid from large joint	125	78	$161.42	$66.39
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	58	39	$42.84	$13.24
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	51	51	$234.29	$99.43
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	33	30	$234.03	$98.73
73030 X-ray of shoulder, minimum of 2 views	22	20	$73.00	$31.30
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	22	21	$314.27	$135.46
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	20	20	$355.80	$152.33
73565 X-ray of both knees while standing	19	19	$86.00	$36.81
27447 Replacement of knee joint, both sides of knee	19	19	$685.81	$200.78
73560 X-ray of knee, 1-2 views	15	14	$74.00	$31.72
27130 Replacement of thigh bone and hip joint with prosthesis	12	11	$534.16	$210.55

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	2,880	32	$20.00	$18.70
J0702 Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg	222	40	$10.00	$6.79
99213 Established patient office or other outpatient visit, typically 15 minutes	200	118	$156.00	$67.96
20610 Aspiration and/or injection of fluid from large joint	98	67	$172.12	$64.79
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	58	34	$55.00	$15.41
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	53	53	$231.00	$99.76
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	52	44	$230.00	$99.65
27447 Replacement of knee joint, both sides of knee	40	40	$623.10	$210.85
27130 Replacement of thigh bone and hip joint with prosthesis	34	34	$597.00	$201.15
J7323 Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose	31	17	$300.00	$141.26
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	22	22	$354.00	$150.80
29823 Removal of extensive shoulder joint tissue using an endoscope	21	21	$275.00	$39.06
27236 Treatment of upper end of broken thigh bone with placement of stabilizing device or prosthetic replacement	16	16	$525.00	$182.90
29827 Repair of shoulder rotator cuff using an endoscope	16	15	$472.00	$160.44
27245 Treatment of broken neck of thigh bone with bone implant	15	15	$458.00	$188.91
20610 Aspiration and/or injection of fluid from large joint	15	14	$148.33	$46.02
99231 Follow-up hospital inpatient care per day, typically 15 minutes	13	11	$83.00	$35.82
29826 Shaving of part of shoulder bone and repair of ligament using an endoscope	12	12	$78.00	$26.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J7328 Hyaluronan or derivative, gelsyn-3, for intra-articular injection, 0.1 mg	10,248	12	$4.00	$1.97
J0897 Injection, denosumab, 1 mg	1,020	11	$20.00	$17.91
J7325 Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg	688	12	$20.00	$11.71
J0702 Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg	343	52	$9.15	$7.12
20610 Aspiration and/or injection of fluid from large joint	180	84	$174.33	$63.06
99213 Established patient office or other outpatient visit, typically 15 minutes	161	111	$156.00	$65.29
J7323 Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose	67	28	$300.00	$139.88
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	41	41	$231.00	$98.57
27447 Replacement of knee joint, both sides of knee	32	31	$596.00	$203.03
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	23	21	$230.00	$93.34
27130 Replacement of thigh bone and hip joint with prosthesis	23	23	$597.00	$196.44
29823 Removal of extensive shoulder joint tissue using an endoscope	20	20	$275.00	$43.18
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	17	11	$55.00	$18.83
27245 Treatment of broken neck of thigh bone with bone implant	13	13	$458.00	$184.52
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	12	11	$94.00	$40.08
29827 Repair of shoulder rotator cuff using an endoscope	11	11	$472.00	$157.23
27236 Treatment of upper end of broken thigh bone with placement of stabilizing device or prosthetic replacement	11	11	$525.00	$179.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0702 Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg	257	38	$8.00	$6.75
99213 Established patient office or other outpatient visit, typically 15 minutes	163	101	$156.00	$64.95
20610 Aspiration and/or injection of fluid from large joint	129	57	$175.34	$63.38
J7323 Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose	62	19	$300.00	$151.78
27447 Replacement of knee joint, both sides of knee	42	41	$596.00	$198.00
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	41	41	$231.00	$96.12
27130 Replacement of thigh bone and hip joint with prosthesis	25	24	$597.00	$195.87
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	23	23	$230.00	$96.83
29823 Removal of extensive shoulder joint tissue using an endoscope	17	17	$275.00	$57.68
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	16	11	$55.00	$23.41
23412 Repair of chronic torn shoulder rotator cuff	11	11	$374.00	$128.74

Medical Specialties & State Licenses

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License MD C0004567

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.

Hospital & Practice Group Affiliations

Agape Physical Therapy And Sports Rehabilitation Lp

12 Newport Dr, Forest Hill, MD 210501758

Upper Chesapeake Orthopedics, Llc

510 Upper Chesapeake Dr, Bel Air, MD 210144336

Phone: 4436433130

Practice Associates & Co-Workers

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

6 Associated Practitioners

Donghua Wang , PA-C

Physician Assistant - Surgical

NPI 1104065473

Physician Assistant (Certified)

Dr. Raj Yalamanchili , MD

Orthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery

NPI 1316127319

Doctor of Medicine (M.D.)

Dr. Sumit Bassi , MD, MBA

Family Medicine - Sports Medicine

NPI 1326314352

Doctor of Medicine (M.D.), Master of Business Administration

Karen Eder , ATC

Specialist/Technologist - Athletic Trainer

NPI 1376001735

Certified Athletic Trainer

Dr. William Cook , MD

Orthopaedic Surgery

NPI 1467484824

Doctor of Medicine (M.D.)

Dr. Edward O'mara , MD

Orthopaedic Surgery

NPI 1487690442

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 September 30, 2011

NPI status registered as active in NPPES database

📍

Updated Practice Location September 30, 2011

Registered at 510 UPPER CHESAPEAKE DR., SUITE 417, PHYSICIANS PAVILLION II, BEL AIR, MD 21014 (Tel: 4436433130)

📍

Updated Business Mailing Address September 30, 2011

Registered at 510 UPPER CHESAPEAKE DR., SUITE 417, PHYSICIANS PAVILLION II, BEL AIR, MD 21014 (Tel: 4436433130)

👤

Provider Name / Credentials Updated September 30, 2011

Recorded as BENJAMIN DIFFENDERFER, PA-C

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 30, 2011

Physician Assistant (License #C0004567 in MD)

🟢

Initial NPI Registration & Enumeration September 30, 2011

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: 1679857239

Entity Type:

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

Enumeration Date: September 30, 2011

Last Update: September 30, 2011

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

510 Upper Chesapeake Dr., Suite 417, Physicians Pavillion Ii

Bel Air, MD 21014

Phone: 4436433130

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.