Physician Profile
Zachary T. Fellows, M.D.
Unclaimed ProfileAbout Dr. Fellows
Based in Carlsbad, CA, Zachary T. Fellows, M.D. is listed in the NPI registry under rheumatology. Zachary is also listed as specializing in internal medicine. According to Medicare claims data, Zachary cared for 495 Medicare patients across 3,902 services. The services billed most often include injection, golimumab, 1 mg, for intravenous use, 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', and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (760) 891-4687
- Email not available
Practice Locations
6120 PASEO DEL NORTE STE L2
Carlsbad, CA 92011
Conditions Commonly Evaluated or Treated
Within Rheumatology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Fibromyalgia
- Gout
- Lupus
- Osteoarthritis
- Psoriatic arthritis
- Rheumatoid arthritis
Autoimmune
- Antiphospholipid Syndrome
- Behçet's Disease
- Dermatomyositis
- Dry Eyes and Mouth
- Granulomatosis with Polyangiitis
- IgA Vasculitis
- IgG4-Related Disease
- Inflammatory myopathy
- Lupus Butterfly Rash
- Positive ANA Blood Test
- Relapsing Polychondritis
Bone
- Paget's Disease of Bone
Bone Health
- Osteoporosis
Connective Tissue
- Hypermobility Syndrome
- Mixed Connective Tissue Disease
- Scleroderma skin disease
- Undifferentiated Connective Tissue Disease
Genetic & Connective Tissue
- Joint Hypermobility
Inflammatory
- Adult-Onset Still's Disease
- Polymyalgia rheumatica
- Rib pain
- Sarcoidosis Joint Pain
Joints
- Baker's Cyst
- Chronic Joint Pain
- Enteropathic Arthritis
- Juvenile Idiopathic Arthritis
- Morning Joint Stiffness
- Palindromic Rheumatism
- Pseudogout
- Reactive Arthritis
- Swollen Fingers or Toes
- Swollen Joints
Nerve & Tendon
- Carpal tunnel
Skin & Soft Tissue
- Erythema Nodosum
Skin & Vascular
- Hypothermia And Frostbite At Work
- Mottled Purplish Skin
Soft Tissue
- Lateral hip pain and trochanteric bursitis
- Shoulder Pain
- Tendinitis and tendinopathy
- Trigger finger
Spine & Back
- Ankylosing Spondylitis
- Sacroiliac joint pain
Vascular
- Cold Sensitive Fingers and Toes
- Temporal Arteritis
- Vasculitis
Procedures & services
Most searched procedures
- Arthritis management
- Infusion therapy
- Joint injections
Consultation
- Second Opinion for Autoimmune Disease
Consultations
- Osteoporosis Medication Consultation
Diagnostics & Injections
- Baker's Cyst Aspiration
- Bursa injection
- Carpal tunnel steroid injection
- Joint injection or aspiration
- Knee Joint Injection
- Nailfold Capillaroscopy
- Sacroiliac joint injection
- Salivary Gland Biopsy
- Tendon Sheath Injection
Education & Support
- Biologic self-injection training
Imaging
- Bone Density Scan Referral
- Joint Ultrasound
Injections
- Ankle Joint Injection
- Finger Joint Injections
- Shoulder Cortisone Injection
- Ultrasound-guided hip injection
- Wrist Cortisone Injection
Lab & Diagnostics
- ANCA Blood Test
- Anti-CCP Antibody Test
- HLA-B27 Genetic Test
- Inflammation Blood Tests
- Joint Fluid Analysis
- Lupus Skin Biopsy
- Myositis Antibody Panel
- Rheumatoid Factor Blood Test
Lab Work
- Autoimmune Blood Panel
- Uric Acid Monitoring
Medication Management
- Biologic medication management
- DMARD Medication Management
- Gout Flare Treatment Plan
- Immunosuppressant Drug Monitoring
- Prolia Injection for Osteoporosis
- Reclast Infusion for Osteoporosis
- Steroid Taper Management
Pain Relief
- Trigger Point Injections
Regenerative Medicine
- PRP Therapy for Joints
Procedures Most Often Billed to Medicare
3,902 services · 495 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Limited ultrasound scan of joint or other extremity structure except blood vessels | Imaging | 76882 |
47 | As often as other peers in Rheumatology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
28 | Less often than most peers in Rheumatology |
| Injection, golimumab, 1 mg, for intravenous use | Drug given | J1602 |
3,050 | Less often than most peers in Rheumatology |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | Drug given | J3301 |
72 | Less often than most peers in Rheumatology |
| 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' | Billing code | G2211 |
301 | More often than most peers in Rheumatology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
248 | As often as other peers in Rheumatology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
62 | As often as other peers in Rheumatology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
57 | More often than most peers in Rheumatology |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
19 | As often as other peers in Rheumatology |
| Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | Billing code | G2212 |
18 | Less often than most peers in Rheumatology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2014 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Limited ultrasound scan of joint or other extremity structure except blood vessels 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Zachary T. Fellows?
Zachary T. Fellows is a rheumatologist in Carlsbad, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Rheumatology”.
NPI registry
What is Zachary T. Fellows's address?
Zachary T. Fellows is listed at 6120 Paseo del Norte Ste L2, Carlsbad, CA 92011. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Zachary T. Fellows?
The number on file is (760) 891-4687. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Zachary T. Fellows's NPI number?
Zachary T. Fellows's National Provider Identifier is 1154733152. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Zachary T. Fellows train?
Zachary T. Fellows attended Other, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How long has Zachary T. Fellows been practicing?
Zachary T. Fellows has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What procedures does Zachary T. Fellows perform?
According to Medicare billing data, Zachary T. Fellows performs imaging including limited ultrasound scan of joint or other extremity structure except blood vessels; provides treatments such as administration of chemotherapy into vein, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Zachary T. Fellows confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Zachary T. Fellows. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.